Philip J. Brown Brian D. Rodriguez 20250710 1 ASCII and Binary Digital Data Denver, CO U.S. Geological Survey Additional information about Originators: Philip Brown, https://orcid.org/0000-0002-2415-7462; Brian Rodriguez, https://orcid.org/0000-0002-2263-611X Suggested citation: Brown, P.J., and Rodriguez, B.D., 2023, Audiomagnetotelluric sounding data, Rio Grande rift, New Mexico, 1997-2004: U.S. Geological Survey data release, https://doi.org/10.5066/F7XP747B. https://doi.org/10.5066/F7XP747B This data set includes the audio-magnetotelluric (AMT) sounding data collected from 1997 to 2004 in and near the Rio Grande rift, New Mexico. The U.S. Geological Survey conducted a series of multidisciplinary studies, including magnetotelluric surveys, in the Rio Grande rift to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The purpose of this data release is to provide audio-magnetotelluric (AMT) station locations and data to the public. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, an electromagnetic survey (AMT), and hydrologic and lithologic data are being used to better understand the aquifer systems. The primary goal of the AMT survey is to map changes in electrical resistivity with depth that are related to differences in rock type. Aquifer properties can be characterized by these variations in rock types. This data product contains magnetotelluric (MT) transfer functions (TFs), which define the frequency-dependent linear relations between components of electromagnetic (EM) field variations measured at a single site. Two sorts of TFs are provided for most sites. All TFs provide input data for subsequent MT inversion and interpretation. They are estimated from the raw EM time series by (a) Fourier transforming data in a series of short overlapping time windows, and (b) applying robust regression methods to the resulting sequence of Fourier coefficients. Remote reference stations were not used because manmade noise sources were assumed to be minimal in this remote area. Apparent resistivities and phases, which can be computed from the off-diagonal components of the impedance tensors, are frequently used in 2-dimensional (2D) interpretations. The Electronic Data Interchange (EDI) data product includes estimates of the TFs for a range of periods (which may vary, depending on instrumentation and deployment time), as well as estimation error covariances. For more information on the EDI data format: Wight, David E., 1987, MT/EMAP Data Interchange Standard, Revision 1.0: Society of Exploration Geophysicists technical standards committee report, 77 p., ISBN = 9780931830617, http://www.seg.org/documents/10161/77915/seg_mt_emap_1987.pdf. This report can be downloaded for free from the Society of Exploration Geophysics (SEG) Technical Standards website, http://seg.org/Publications/SEG-Technical-Standards. These metadata document the full suite of MT data for this site and includes the files below. Their contents are described in the entity and attribute section of the metadata. al07.edi USA-New_Mexico-Rio_Grande_Rift-1997-AMT-AL07.edi BF6-9621.RSP BF6-9624.RSP BF6-9625.RSP BF6-9626.RSP BF6-9628.RSP EF-9608X.RSP EF-9608Y.RSP AL07A1.SD6 AL07A1.SD7 AL07A1.SD8 AL07A1.SD9 AL07A2.SD6 AL07A2.SD7 AL07A2.SD8 AL07A2.SD9 AL07A3.SD9 AL07A1.FC6 AL07A1.FC7 AL07A1.FC8 AL07A1.FC9 AL07A2.FC6 AL07A2.FC7 AL07A2.FC8 AL07A2.FC9 AL07A3.FC9 AL07A1.TS1 AL07A1.TS2 AL07A2.TS1 AL07.AVG AL07A1.BP1 AL07A1.BP2 AL07A2.BP1 19970824 19970824 ground condition Complete Not planned -106.833637 -106.833637 35.130943 35.130943 ISO 19115 Topic Category geoscientificInformation economy None Department of the Interior DOI U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics, and Geochemistry Science Center GGGSC electric field (earth) impedance tipper apparent resistivity impedance phase impedance strike magnetotelluric MT audiomagnetotelluric AMT sounding Rio Grande rift USGS Thesaurus magnetic field (earth) geophysics GPS measurement magnetotelluric surveying USGS Metadata Identifier USGS:64b8c9fbd34e70357a2bdf37 USGS Geographic Names Information System (GNIS), https://geonames.usgs.gov Bernalillo County Common geographic areas New Mexico None USA Please see 'Distribution Info' for details. There is no guarantee concerning the accuracy of the data. Any user who modifies the data is obligated to describe the types of modifications they perform. Data have been checked to ensure the accuracy. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to https://www.usgs.gov/office-of-the-director/privacy-policies for the USGS disclaimer. U.S. Geological Survey Brian D. Rodriguez Research Geophysicist Physical

Denver Federal Center, PO Box 25046, MS 973

Denver CO 80225-0046 USA 303-236-1361 brod@usgs.gov Data collected by Brian D. Rodriguez of the Geology, Geophysics and Geochemistry Science Center. This project was funded by U.S. Geological Survey (USGS) Minerals Resources Program (MRP). MS-DOS version 6.22 Wight, D.E. 1987 Revision 1.0 Society of Exploration Geophysicists technical standards committee report ISBN = 9780931830617 Austin, TX Society of Exploration Geophysics This document has been converted from the original document: The original document was never published in Geophysics http://www.seg.org/documents/10161/77915/seg_mt_emap_1987.pdf The data have been peer reviewed and compared with related ancillary data. Data were reviewed for consistency and analyses results were checked for validity. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. All magnetotelluric stations as part of this survey were included in this data release for the region and time period specified in this metadata. Spatial locations were determined from hand-held global positioning system (GPS) devices. In general, the GPS units used by field scientists recorded sample locations to within 10 feet (3 meters) of the true location. The locations were verified using a geographic information system (GIS) and digital topographic maps. Elevations were determined from The USGS National Map Bulk Point Query Service based on the USGS 3DEP (3D elevation program) 1/3 arc-second layer (10-meter). Vertical accuracy was not assessed for this specific dataset. The overall absolute vertical accuracy of the seamless DEMs within the conterminous United States (2013), expressed as the root mean square error (RMSE) of 25,310 reference points, was 1.55 meters (USGS, 2014 - https://doi.org/10.3133/ofr20141008). The vertical accuracy varies across the U.S. as a result of differences in source DEM quality, terrain relief, land cover, and other factors. Multiple high frequency time series (TS1 file extension), spectra cross power files (BP1 file extension), Fourier Coefficient (FC6, FC7, FC8, and FC9 file extensions), and Synchronous Detection Mode spectra cross power blocks (SD6, SD7, SD8, and SD9 file extensions) were each recorded for about 1 minute with an Electromagnetic Instruments (EMI) MT-1 MT data acquisition instrument employing orthogonal horizontal EMI AMT induction magnetic coils and EMI Titanium electrodes, along with a vertical EMI AMT induction magnetic coil. The proprietary, DOS-based, EMI recording software used is MTACQ, version 2.00 (September 27, 1994). The collected time series were stored on a portable field-rugged laptop computer and then converted to intermediate spectra cross power files (BP1 file extension) using fast Fourier transform (FFT) techniques and least-squares, cross-spectral analysis to solve for a tensor transfer function. The time series and spectra cross power files were downloaded from the portable laptop each evening for further processing. The time series files are readable by other third-party software, such as Geosystem's WinGLink, version 2.20.02 (June 5, 2008), but the Fourier Coefficient and cross power files are only known to be readable by the EMI proprietary software. 19970824 Combine multiple frequency band BP and SD cross power files into a single cross power file (AVG file extension) using EMI's MTACQ, version 2.00, software 20230321 Convert cross power AVG file to spectra edi file using EMI's MTACQ, version 2.00, software 20230321 Use EDITFMD Converter MATLAB script, 12 March 2019 version to extract survey and station information and settings from AVG, and spectra edi files to create a Transfer Function edi file 20230322 Use Jupyter Notebook python tool, SquamataAssemblyAMTv1-24.ipynb to extract survey and station information from AVG, spectra edi, and Transfer Function edi file to FGDC-compliant metadata. 20230717 Point Entity point 1 0.000001 0.000001 Decimal degrees D_WGS_1984 WGS_1984 6378137.0 298.257223563 USA-New_Mexico-Rio_Grande_Rift-1997-AMT-AL07.edi Transfer Function EDI File - MT/EMAP Data Interchange Standard, Revision 1.0, Dec 1987, David E. Wight. For more information on the EDI data format: Wight, D.E., 1987, MT/EMAP Data Interchange Standard, Technical standards committee report, Society of Exploration Geophysicists, isbn=9780931830617, http://www.seg.org/documents/10161/77915/seg_mt_emap_1987.pdf U.S. Geological Survey HEAD Header file information containing survey and station collection information. Society of Exploration Geophysicists Section designator only, no associated value. INFO Begins information section that contains descriptive content, or metadata, describing the data collection. Society of Exploration Geophysicists Section designator only, no associated value. DEFINEMEAS Begins Measurement Definition data section Society of Exploration Geophysicists Section designator only, no associated value. SPECTRASECT Begins a spectra data section, no value. Society of Exploration Geophysicists Section designator only, no associated value. DATAID Survey name Society of Exploration Geophysicists al07a Survey name; Units: none U.S. Geological Survey ACQBY Surveyor Company Name Society of Exploration Geophysicists US_Geological_Survey Surveyor Company Name; Units: none U.S. Geological Survey FILEBY Name of individual collecting the data Society of Exploration Geophysicists US_Geological_Survey Name of individual collecting the data; Units: none U.S. Geological Survey ACQDATE Acquisition Start Date Society of Exploration Geophysicists 19970824 Acquisition Start Date; Units: MM/DD/YY U.S. Geological Survey FILEDATE Date of file creation Society of Exploration Geophysicists 20230316 Date of file creation; Units: YYYYMMDD U.S. Geological Survey COUNTRY Name of the country where the data was collected Society of Exploration Geophysicists USA Name of the country where the data was collected; Units: none U.S. Geological Survey STATE Name of the state/province where the data was collected Society of Exploration Geophysicists NM Name of the state/province where the data was collected; Units: none U.S. Geological Survey LAT Latitude coordinate of data collection site, D:M:S Society of Exploration Geophysicists 35:07:51.0 Latitude coordinate of data collection site, D:M:S; Units: D:M:S U.S. Geological Survey LONG Longitude coordinate of data collection site, D:M:S Society of Exploration Geophysicists -106:50:01.0 Longitude coordinate of data collection site, D:M:S; Units: D:M:S U.S. Geological Survey ELEV Site elevation Society of Exploration Geophysicists 1806.00 Site elevation; Units: meters U.S. Geological Survey UNITS Units of elevation (M is meters, FT is feet) Society of Exploration Geophysicists M Units of elevation (M is meters, FT is feet); Units: none U.S. Geological Survey STDVERS Version of EDI format for this file Society of Exploration Geophysicists 1.0 Version of EDI format for this file; Units: unitless U.S. Geological Survey PROGVERS Version ID of software/program used to create file Society of Exploration Geophysicists edi_converter_beta.m Version ID of software/program used to create file; Units: none U.S. Geological Survey PROGDATE Software version date of software used to create file Society of Exploration Geophysicists 20190128 Software version date of software used to create file; Units: MM/DD/YY U.S. Geological Survey EMPTY Value that represents no data, which typically is 1e+32 Society of Exploration Geophysicists 1e+32 Value that represents no data, which typically is 1e+32; Units: unitless U.S. Geological Survey MAXINFO Maximum number of text lines in INFO text Society of Exploration Geophysicists 999 Maximum number of text lines in INFO text; Units: unitless U.S. Geological Survey PROJECT Project name U.S. Geological Survey USGS_MT_Survey Project name; Units: none U.S. Geological Survey SURVEY Survey name U.S. Geological Survey Rio_Grande_Rift Survey name; Units: none U.S. Geological Survey YEAR Survey year U.S. Geological Survey 1997 Survey year; Units: YYYY U.S. Geological Survey PROCESSEDBY Surveyor Company Name U.S. Geological Survey US_Geological_Survey Surveyor Company Name; Units: none U.S. Geological Survey PROCESSINGSOFTWARE Software used to create file U.S. Geological Survey mtmerge/mtft/mtedit Software used to create file; Units: none U.S. Geological Survey MAXCHAN Maximum number of channels Society of Exploration Geophysicists 7 Maximum number of channels; Units: unitless U.S. Geological Survey MAXRUN Maximum number of runs Society of Exploration Geophysicists 999 Maximum number of runs; Units: unitless U.S. Geological Survey MAXMEAS Maximum number of measurements Society of Exploration Geophysicists 99999 Maximum number of measurements; Units: unitless U.S. Geological Survey UNITS Units of elevation (M is meters, FT is feet) Society of Exploration Geophysicists M Units of elevation (M is meters, FT is feet); Units: none U.S. Geological Survey REFLOC Survey reference name U.S. Geological Survey Rio_Grande_Rift Survey reference name; Units: unitless U.S. Geological Survey REFLAT Latitude coordinate of reference data collection site Society of Exploration Geophysicists 35:07:51.0 Latitude coordinate of reference data collection site; Units: D:M:S U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID=0011.001 CHTYPE=HX X=0.0 Y=0.0 Z=0.0 AZM=0.0 Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID=0012.001 CHTYPE=HY X=0.0 Y=0.0 Z=0.0 AZM=90.0 Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID=0013.001 CHTYPE=HZ X=0.0 Y=0.0 Z=0.0 AZM=0.0 Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey EMEAS Defines the electrode locations and run parameters for an electric field (E) measurement Society of Exploration Geophysicists ID=0014.001 CHTYPE=EX X=0.0 Y=0.0 Z=0.0 X2=30.0 Y2=0.0 AZM=0.0 Defines the electrode locations and run parameters for an electric field (E) measurement; Units: none U.S. Geological Survey EMEAS Defines the electrode locations and run parameters for an electric field (E) measurement Society of Exploration Geophysicists ID=0015.001 CHTYPE=EY X=0.0 Y=0.0 Z=0.0 X2=0.0 Y2=30.0 AZM=90.0 Defines the electrode locations and run parameters for an electric field (E) measurement; Units: none U.S. Geological Survey SECTID Section identifier Society of Exploration Geophysicists al07a Section identifier; Units: none U.S. Geological Survey NFREQ Integer number of frequencies Society of Exploration Geophysicists 31 Integer number of frequencies; Units: unitless U.S. Geological Survey HX Axis type of magnetic field (H) measurement channel in X-direction followed by numeric channel label U.S. Geological Survey 0011.001 Axis type of magnetic field (H) measurement channel in X-direction followed by numeric channel label; Units: none U.S. Geological Survey HY Axis type of magnetic field (H) measurement channel in Y-direction followed by numeric channel label U.S. Geological Survey 0012.001 Axis type of magnetic field (H) measurement channel in Y-direction followed by numeric channel label; Units: none U.S. Geological Survey HZ Axis type of magnetic field (H) measurement channel in Z-direction followed by numeric channel label U.S. Geological Survey 0013.001 Axis type of magnetic field (H) measurement channel in Z-direction followed by numeric channel label; Units: none U.S. Geological Survey EX Axis type of electric field (E) measurement channel in X-direction followed by numeric channel label U.S. Geological Survey 0014.001 Axis type of electric field (E) measurement channel in X-direction followed by numeric channel label; Units: none U.S. Geological Survey EY Axis type of electric field (E) measurement channel in Y-direction followed by numeric channel label U.S. Geological Survey 0015.001 Axis type of electric field (E) measurement channel in Y-direction followed by numeric channel label; Units: none U.S. Geological Survey ZXXR Real component of impedance ZXX U.S. Geological Survey -1877.6 751.58 ohms ZXXI Imaginary component of impedance ZXX U.S. Geological Survey -3551.0 694.56 ohms ZXX.VAR Total variance of impedance of ZXX U.S. Geological Survey 292.35 232550.0 ohms*ohms ZXYR Real component of impedance ZXY U.S. Geological Survey -2407.7 984.79 ohms ZXYI Imaginary component of impedance ZXY U.S. Geological Survey -2208.7 1151.2 ohms ZXY.VAR Total variance of impedance of ZXY U.S. Geological Survey 138.46 190370.0 ohms*ohms ZYXR Real component of impedance ZYX U.S. Geological Survey -2670.5 189.46 ohms ZYXI Imaginary component of impedance ZYX U.S. Geological Survey -3261.3 810.42 ohms ZYX.VAR Total variance of impedance of ZYX U.S. Geological Survey 352.52 234600.0 ohms*ohms ZYYR Real component of impedance ZYY U.S. Geological Survey -2692.7 424.3 ohms ZYYI Imaginary component of impedance ZYY U.S. Geological Survey -1851.1 807.85 ohms ZYY.VAR Total variance of impedance of ZYY U.S. Geological Survey 159.92 192050.0 ohms*ohms TXR.EXP Real part of complex tipper component TX U.S. Geological Survey -4.6625 4.0888 unitless TXI.EXP Imaginary part of complex tipper component TX U.S. Geological Survey -4.8714 2.9471 unitless TXVAR.EXP Total variance of complex tipper component TX U.S. Geological Survey 0.0069942 1.2453 unitless TYR.EXP Real part of complex tipper component TY U.S. Geological Survey -4.3144 0.13137 unitless TYI.EXP Imaginary part of complex tipper component TY U.S. Geological Survey -3.2056 2.5086 unitless TYVAR.EXP Total variance of complex tipper component TY U.S. Geological Survey 0.0071861 1.0194 unitless al07.edi Spectra EDI File - MT/EMAP Data Interchange Standard, Revision 1.0, Dec 1987, David E. Wight. For more information on the EDI data format: Wight, D.E., 1987, MT/EMAP Data Interchange Standard, Technical standards committee report, Society of Exploration Geophysicists, isbn=9780931830617, http://www.seg.org/documents/10161/77915/seg_mt_emap_1987.pdf U.S. Geological Survey HEAD Header file information containing survey and station collection information. Society of Exploration Geophysicists Section designator only, no associated value. INFO Begins information section that contains descriptive content, or metadata, describing the data collection. Society of Exploration Geophysicists Section designator only, no associated value. DEFINEMEAS Begins Measurement Definition data section Society of Exploration Geophysicists Section designator only, no associated value. SPECTRASECT Begins a spectra data section, no value. Society of Exploration Geophysicists Section designator only, no associated value. DATAID Survey name Society of Exploration Geophysicists RioGrandeRift Survey name; Units: none U.S. Geological Survey ACQBY Surveyor Company Name Society of Exploration Geophysicists USGS Surveyor Company Name; Units: none U.S. Geological Survey FILEBY Name of individual collecting the data Society of Exploration Geophysicists BRodriguez Name of individual collecting the data; Units: none U.S. Geological Survey ACQDATE Acquisition Start Date Society of Exploration Geophysicists 05/24/97 Acquisition Start Date; Units: MM/DD/YY U.S. Geological Survey FILEDATE Date of file creation Society of Exploration Geophysicists 09/16/94 Date of file creation; Units: YYYYMMDD U.S. Geological Survey ENDDATE Acquisition End Date Society of Exploration Geophysicists 05/24/97 Acquisition End Date; Units: MM/DD/YY U.S. Geological Survey COUNTRY Name of the country where the data was collected Society of Exploration Geophysicists USA Name of the country where the data was collected; Units: none U.S. Geological Survey STATE Name of the state/province where the data was collected Society of Exploration Geophysicists NewMexico Name of the state/province where the data was collected; Units: none U.S. Geological Survey COUNTY Name of the county where the data was collected Society of Exploration Geophysicists Sandoval Name of the county where the data was collected; Units: none U.S. Geological Survey LAT Latitude coordinate of data collection site, D:M:S Society of Exploration Geophysicists 35:07:51. Latitude coordinate of data collection site, D:M:S; Units: D:M:S U.S. Geological Survey LONG Longitude coordinate of data collection site, D:M:S Society of Exploration Geophysicists -106:50:01. Longitude coordinate of data collection site, D:M:S; Units: D:M:S U.S. Geological Survey UNITS Units of elevation (M is meters, FT is feet) Society of Exploration Geophysicists M Units of elevation (M is meters, FT is feet); Units: none U.S. Geological Survey STDVERS Version of EDI format for this file Society of Exploration Geophysicists 1.0 Version of EDI format for this file; Units: unitless U.S. Geological Survey PROGVERS Version ID of software/program used to create file Society of Exploration Geophysicists GEOTOOLS_2.3 Version ID of software/program used to create file; Units: none U.S. Geological Survey PROGDATE Software version date of software used to create file Society of Exploration Geophysicists 09/16/94 Software version date of software used to create file; Units: MM/DD/YY U.S. Geological Survey MAXCHAN Maximum number of channels Society of Exploration Geophysicists 7 Maximum number of channels; Units: unitless U.S. Geological Survey MAXRUN Maximum number of runs Society of Exploration Geophysicists 999 Maximum number of runs; Units: unitless U.S. Geological Survey MAXMEAS Maximum number of measurements Society of Exploration Geophysicists 99999 Maximum number of measurements; Units: unitless U.S. Geological Survey UNITS Units of elevation (M is meters, FT is feet) Society of Exploration Geophysicists M Units of elevation (M is meters, FT is feet); Units: none U.S. Geological Survey REFLAT Latitude coordinate of reference data collection site Society of Exploration Geophysicists 35:07:51. Latitude coordinate of reference data collection site; Units: D:M:S U.S. Geological Survey REFLONG Longitude coordinate of reference data collection site Society of Exploration Geophysicists -106:50:01. Longitude coordinate of reference data collection site; Units: D:M:S U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID= 1071.001 CHTYPE=HX X= 15590 Y= -75811 AZM=-145. Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID= 1072.001 CHTYPE=HY X= 15590 Y= -75811 AZM= -55. Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey HMEAS Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement Society of Exploration Geophysicists ID= 1073.001 CHTYPE=HZ X= 15590 Y= -75811 AZM= 0. Defines the sensor location and orientation, and run parameters for a magnetic field (H) measurement; Units: none U.S. Geological Survey EMEAS Defines the electrode locations and run parameters for an electric field (E) measurement Society of Exploration Geophysicists ID= 1074.001 CHTYPE=EX X= 15602 Y= -75802 X2= 15577 Y2= -75819 Defines the electrode locations and run parameters for an electric field (E) measurement; Units: none U.S. Geological Survey EMEAS Defines the electrode locations and run parameters for an electric field (E) measurement Society of Exploration Geophysicists ID= 1075.001 CHTYPE=EY X= 15581 Y= -75798 X2= 15598 Y2= -75823 Defines the electrode locations and run parameters for an electric field (E) measurement; Units: none U.S. Geological Survey SECTID Section identifier Society of Exploration Geophysicists -107 Section identifier; Units: none U.S. Geological Survey NCHAN Integer number of channels Society of Exploration Geophysicists 5 Integer number of channels; Units: unitless U.S. Geological Survey NFREQ Integer number of frequencies Society of Exploration Geophysicists 31 Integer number of frequencies; Units: unitless U.S. Geological Survey MAXBLKS Integer number of the maximum number of blocks Society of Exploration Geophysicists 100 Integer number of the maximum number of blocks; Units: unitless U.S. Geological Survey SPECTRA FREQ= 2.337E+04 ROTSPEC= 0 BW= 1.880E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -3.02996 21.4933 none SPECTRA FREQ= 1.529E+04 ROTSPEC= 0 BW= 1.880E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.000654963 1.98649 none SPECTRA FREQ= 1.159E+04 ROTSPEC= 0 BW= 1.060E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.524639 2.16128 none SPECTRA FREQ= 6.850E+03 ROTSPEC= 0 BW= 5.800E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -1.88985 5.32652 none SPECTRA FREQ= 5.210E+03 ROTSPEC= 0 BW= 6.200E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0642991 0.13179 none SPECTRA FREQ= 3.550E+03 ROTSPEC= 0 BW= 4.800E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00125375 5.782 none SPECTRA FREQ= 2.730E+03 ROTSPEC= 0 BW= 4.800E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.000659333 0.939981 none SPECTRA FREQ= 2.420E+03 ROTSPEC= 0 BW= 4.040E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00197731 1.65832 none SPECTRA FREQ= 1.870E+03 ROTSPEC= 0 BW= 4.040E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00840788 6.63228 none SPECTRA FREQ= 1.170E+03 ROTSPEC= 0 BW= 2.230E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00305938 2.61401 none SPECTRA FREQ= 8.850E+02 ROTSPEC= 0 BW= 1.060E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00104632 0.516653 none SPECTRA FREQ= 7.200E+02 ROTSPEC= 0 BW= 5.800E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0357095 0.6804 none SPECTRA FREQ= 5.800E+02 ROTSPEC= 0 BW= 1.230E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.100738 26.6176 none SPECTRA FREQ= 4.600E+02 ROTSPEC= 0 BW= 1.230E+02 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0614382 15.0852 none SPECTRA FREQ= 3.400E+02 ROTSPEC= 0 BW= 6.900E+01 AVGT= 120 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.14922 30.7717 none SPECTRA FREQ= 2.700E+02 ROTSPEC= 0 BW= 1.060E+02 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.160197 31.9776 none SPECTRA FREQ= 2.100E+02 ROTSPEC= 0 BW= 5.800E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00597987 1.25948 none SPECTRA FREQ= 1.724E+02 ROTSPEC= 0 BW= 1.385E+01 AVGT= 6 AVGF= 60 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0881923 5.0849 none SPECTRA FREQ= 1.600E+02 ROTSPEC= 0 BW= 5.800E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0242891 3.53261 none SPECTRA FREQ= 1.400E+02 ROTSPEC= 0 BW= 5.800E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0602335 4.67381 none SPECTRA FREQ= 1.221E+02 ROTSPEC= 0 BW= 2.620E+01 AVGT= 6 AVGF= 43 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0488818 5.95797 none SPECTRA FREQ= 1.000E+02 ROTSPEC= 0 BW= 3.200E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0709445 4.31334 none SPECTRA FREQ= 8.594E+01 ROTSPEC= 0 BW= 3.152E+01 AVGT= 66 AVGF= 4 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.195023 10.3966 none SPECTRA FREQ= 7.900E+01 ROTSPEC= 0 BW= 3.200E+01 AVGT= 60 AVGF= 1 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.883342 44.6679 none SPECTRA FREQ= 6.006E+01 ROTSPEC= 0 BW= 2.083E+01 AVGT= 6 AVGF= 22 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -5.39086 255.499 none SPECTRA FREQ= 4.150E+01 ROTSPEC= 0 BW= 1.551E+01 AVGT= 6 AVGF= 16 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.0540418 4.18909 none SPECTRA FREQ= 2.832E+01 ROTSPEC= 0 BW= 1.071E+01 AVGT= 6 AVGF= 11 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00189112 0.411008 none SPECTRA FREQ= 1.904E+01 ROTSPEC= 0 BW= 7.789E+00 AVGT= 6 AVGF= 8 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00832053 1.09674 none SPECTRA FREQ= 1.221E+01 ROTSPEC= 0 BW= 5.820E+00 AVGT= 6 AVGF= 6 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00162052 0.330546 none SPECTRA FREQ= 7.324E+00 ROTSPEC= 0 BW= 3.835E+00 AVGT= 6 AVGF= 4 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.00201516 0.278827 none SPECTRA FREQ= 4.394E+00 ROTSPEC= 0 BW= 1.857E+00 AVGT= 6 AVGF= 2 //25 Block of spectra parameters and NCHAN x NCHAN spectra data are repeated for each Spectra center frequency U.S. Geological Survey -0.066592 0.408588 none AL07.AVG Single Cross Power File created by combining multiple frequency band BP and SD cross power files using EMI's MTACQ, version 2.00, software U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A1.SD9 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 13 Data collection start date and time Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area. Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for. Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data. Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected. Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station. Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description. Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments. Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments. Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information Units: none U.S. Geological Survey DATA VALUE: 4.3945 1.85697 6 2 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.10777226 0.395752539 unitless DATA VALUE: 7.3242 3.83474 6 4 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0359246119 0.2682329393 unitless DATA VALUE: 12.2070 5.82001 6 6 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0566330269 0.3339734919 unitless DATA VALUE: 19.0430 7.78856 6 8 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0780389074 1.353102313 unitless DATA VALUE: 28.3203 10.71230 6 11 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0696634764 0.3991044386 unitless DATA VALUE: 41.5039 15.50557 6 16 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0863954872 7.247099158 unitless DATA VALUE: 60.0586 20.82457 6 22 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -2.36787712 464.9308348 unitless DATA VALUE: 79.0000 32.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -1588214.59 628366058.8 unitless DATA VALUE: 85.9375 31.51564 66 4 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -1451218.17 1092345876.0 unitless DATA VALUE: 100.0000 32.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -28263.5717 682297678.4 unitless DATA VALUE: 122.0703 26.20424 6 43 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0230173148 8.328912316 unitless DATA VALUE: 140.0000 58.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -2122603.12 474006325.9 unitless DATA VALUE: 160.0000 58.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -4392.67534 484347770.8 unitless DATA VALUE: 172.3633 13.85040 6 60 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -0.0534728263 9.229498214 unitless DATA VALUE: 210.0000 58.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -6277395.96 474824437.8 unitless DATA VALUE: 270.0000 106.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -525879.797 205329669.1 unitless DATA VALUE: 340.0000 69.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -96.2553531 1398793171.0 unitless DATA VALUE: 460.0000 123.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -432828.21 690538266.5 unitless DATA VALUE: 580.0000 123.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -211053.983 565299372.9 unitless DATA VALUE: 720.0000 58.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -393918.303 421838913.6 unitless DATA VALUE: 885.0000 106.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -204805.621 263009568.1 unitless DATA VALUE: 1170.0000 223.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -9213142.25 244066402.1 unitless DATA VALUE: 1870.0000 404.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -422583.468 196099181.0 unitless DATA VALUE: 2420.0000 404.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -8320719.56 1263391093.0 unitless DATA VALUE: 2730.0000 480.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -548807.261 107493851.8 unitless DATA VALUE: 3550.0000 480.00000 120 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -3698035.72 165046862.3 unitless DATA VALUE: 5210.0000 620.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -507108.452 53138729.09 unitless DATA VALUE: 6850.0000 58.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -11879.9044 687913237.4 unitless DATA VALUE:11590.0000 106.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -4607.06798 735181739.3 unitless DATA VALUE:15290.0000 188.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -2205067.23 745630762.7 unitless DATA VALUE:23370.0000 188.00000 60 1 Combined average of the three time bands (high, mid, and low) of the BP files, where a 5% frequency window is used for any overlapping frequencies between the high and mid BP files or the mid and low BP files. U.S. Geological Survey -78108895.5 5066437215.0 unitless Text File BF6-9621.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz Electromagnetic Instruments (EMI) 0.1 25000.0 Hz Amp Amplitude - Volts/Gamma Electromagnetic Instruments (EMI) 0.00191 0.16941 Volts/Gamma Phz Phase - Degrees Electromagnetic Instruments (EMI) -19.6 89.3 Degrees Text File BF6-9624.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz Electromagnetic Instruments (EMI) 0.1 25000.0 Hz Amp Amplitude - Volts/Gamma Electromagnetic Instruments (EMI) 0.00183 0.17196 Volts/Gamma Phz Phase - Degrees Electromagnetic Instruments (EMI) -20.2 89.3 Degrees Text File BF6-9625.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz Electromagnetic Instruments (EMI) 0.1 25000.0 Hz Amp Amplitude - Volts/Gamma Electromagnetic Instruments (EMI) 0.00185 0.1749 Volts/Gamma Phz Phase - Degrees Electromagnetic Instruments (EMI) -22.3 89.3 Degrees Text File BF6-9626.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz Electromagnetic Instruments (EMI) 0.1 25000.0 Hz Amp Amplitude - Volts/Gamma Electromagnetic Instruments (EMI) 0.00195 0.16796 Volts/Gamma Phz Phase - Degrees Electromagnetic Instruments (EMI) -19.6 89.3 Degrees Text File BF6-9628.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz Electromagnetic Instruments (EMI) 0.1 25000.0 Hz Amp Amplitude - Volts/Gamma Electromagnetic Instruments (EMI) 0.00194 0.17731 Volts/Gamma Phz Phase - Degrees Electromagnetic Instruments (EMI) -19.4 89.3 Degrees Text File EF-9608X.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz U.S. Geological Survey 0.0001 25000.0 Hz 10 dB Gain Amp Amplitude - Volts U.S. Geological Survey 0.05 3.15 Volts 10 dB Gain Phz Phase - Degrees U.S. Geological Survey -.4 9.0 Degrees 20 dB Gain Amp Amplitude - Volts U.S. Geological Survey .16 9.97 Volts 20 dB Gain Phz Phase - Degrees U.S. Geological Survey -.4 9.0 Degrees 30 dB Gain Amp Amplitude - Volts U.S. Geological Survey .51 9.93 Volts 30 dB Gain Phz Phase - Degrees U.S. Geological Survey -.5 82.6 Degrees 40 dB Gain Amp Amplitude - Volts U.S. Geological Survey 1.6 100.07 Volts 40 dB Gain Phz Phase - Degrees U.S. Geological Survey -215.0 82.7 Degrees Text File EF-9608Y.RSP System Calibration File Electromagnetic Instruments (EMI) Freq Frequency - Hz U.S. Geological Survey 0.0001 25000.0 Hz 10 dB Gain Amp Amplitude - Volts U.S. Geological Survey 0.05 3.18 Volts 10 dB Gain Phz Phase - Degrees U.S. Geological Survey -.3 9.1 Degrees 20 dB Gain Amp Amplitude - Volts U.S. Geological Survey .16 9.99 Volts 20 dB Gain Phz Phase - Degrees U.S. Geological Survey -.4 9.1 Degrees 30 dB Gain Amp Amplitude - Volts U.S. Geological Survey .52 8.33 Volts 30 dB Gain Phz Phase - Degrees U.S. Geological Survey -.4 9.1 Degrees 40 dB Gain Amp Amplitude - Volts U.S. Geological Survey 1.63 100.91 Volts 40 dB Gain Phz Phase - Degrees U.S. Geological Survey -224.6 82.8 Degrees AL07A1.SD6 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A1.SD6 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 20 3 1.0000 16.0000 10.0000 3 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1107942.2 312320583.5 none Index 1: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -493608.764 300330531.5 none Index 2: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1225274.05 378352754.4 none Index 3: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3177.8725 153236181.1 none Index 4: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -670521.428 161129682.0 none Index 5: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -4486326.6 165284156.2 none Index 6: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -231347.353 113380363.0 none Index 7: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -7783.85367 141288299.4 none Index 8: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -66.5091081 56927174.99 none Index 9: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -20422.4067 55359557.94 none Index 10: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -140.234449 245014107.6 none Index 11: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -706339.039 347769433.2 none Index 12: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1703132.72 459213202.2 none Index 13: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1743.42035 200437399.0 none Index 14: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1460762.37 173752891.9 none Index 15: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2251306.78 167297478.2 none Index 16: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -262647.114 79481662.86 none Index 17: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -176764.55 73511882.49 none Index 18: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -17383.3419 44741170.78 none Index 19: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8284.13195 63197643.17 none Index 20: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -769796.743 240119617.8 none Index 21: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -905047.524 400247632.1 none Index 22: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1010224.82 244666569.9 none Index 23: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -535973.709 199414759.2 none Index 24: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3121034.68 154035118.5 none Index 25: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -6078061.17 169694290.2 none Index 26: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -32111.0027 69280227.98 none Index 27: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -403012.695 128173667.6 none Index 28: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -19.7814244 57380699.42 none Index 29: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3814.55512 58721554.25 none AL07A1.SD7 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A1.SD7 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 10 6 1.0000 53.0000 10.0000 3 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -18010.718 31894784.41 none Index 1: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -9326.67959 20349443.92 none Index 2: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -961.583907 24372008.41 none Index 3: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -36926.9879 27574285.25 none Index 4: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -761.368037 11382883.2 none Index 5: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -39519.084 9849345.822 none Index 6: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -25454.3128 10352073.05 none Index 7: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -93745.3869 9269558.138 none Index 8: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -36.2236267 6978881.28 none Index 9: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2.48492969 7475808.095 none Index 10: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -79720.1416 44596742.41 none Index 11: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1737.08216 8896966.178 none Index 12: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -59704.1709 32141079.06 none Index 13: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -72090.9584 17864918.79 none Index 14: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2743.67295 20781394.04 none Index 15: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -24440.743 13769429.14 none Index 16: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -23430.7336 6460460.401 none Index 17: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1410.25056 6634800.011 none Index 18: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -44152.3171 7242687.789 none Index 19: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -14090.6154 5067657.331 none Index 20: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -6462.99679 31335226.79 none Index 21: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8307.52906 20617614.88 none Index 22: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -64551.0877 27921330.03 none Index 23: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -17770.7224 32062205.24 none Index 24: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1.49509077 12429585.1 none Index 25: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -24083.5436 11356230.22 none Index 26: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -15407.1631 6158524.937 none Index 27: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -57956.7916 7041989.904 none Index 28: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -17277.4688 6043567.294 none Index 29: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -84862.4109 5494691.922 none Index 30: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -135152.719 53381797.07 none Index 31: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5241.42563 20097047.71 none Index 32: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5787.52945 29498806.3 none Index 33: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -35082.2482 27889780.5 none Index 34: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -475.767493 21043069.51 none Index 35: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -38903.0337 10307962.81 none Index 36: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -263.789626 6146543.371 none Index 37: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -63681.8598 5832396.4 none Index 38: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -86.1353345 7554459.117 none Index 39: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -44204.4831 5274417.75 none Index 40: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -43464.1175 44484830.89 none Index 41: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -97.2523755 21059308.24 none Index 42: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -48089.9817 30366418.25 none Index 43: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -44128.3559 23583270.28 none Index 44: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -17.9287533 12822098.32 none Index 45: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -36636.1704 16499292.17 none Index 46: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8578.82533 7198524.868 none Index 47: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -39375.8153 6371324.198 none Index 48: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -66966.4555 6259408.983 none Index 49: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -106684.285 7405536.58 none Index 50: 340.0000 106.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -103813.797 48569601.52 none Index 51: 460.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1332.29373 15080673.17 none Index 52: 580.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -909.87635 23898765.53 none Index 53: 720.0000 188.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -68289.2119 20791137.27 none Index 54: 885.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -24.5785228 12909323.47 none Index 55: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -18806.25 12404497.62 none Index 56: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -172.976561 8734561.633 none Index 57: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -25547.3181 5892277.266 none Index 58: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5751.01615 6403303.442 none Index 59: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -58049.4369 7192019.284 none AL07A1.SD8 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A1.SD8 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )60dB27 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 10 6 1.0000 170.0000 6.0000 3 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -422.453123 14544710.24 none Index 1: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -34915.8883 7967741.407 none Index 2: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -7294.71713 8661168.534 none Index 3: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -95475.8158 7554459.117 none Index 4: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -138688.515 7384995.675 none Index 5: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -370164.26 10881214.1 none Index 6: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -325.549606 14754363.72 none Index 7: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5343.65199 6378985.752 none Index 8: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -17392.2833 7585708.172 none Index 9: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -42.0080796 9233227.81 none Index 10: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -113074.309 4743327.262 none Index 11: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -308189259.0 23369128140.0 none Index 12: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -20802.8708 15610448.77 none Index 13: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -97084.1867 13980091.24 none Index 14: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -46940.8167 7748584.129 none Index 15: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -18794.3955 7266670.198 none Index 16: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -7.63567893 5132523.345 none Index 17: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -243095.717 13249478.34 none Index 18: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -6837.18013 8036716.769 none Index 19: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -4.57964457 6062672.409 none Index 20: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -43094.5694 8186912.072 none Index 21: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -150991.656 9173271.785 none Index 22: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -96.711826 4354131.179 none Index 23: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -21.0540216 8474545.568 none Index 24: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -116.993827 15933664.55 none Index 25: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -232.490464 8267280.558 none Index 26: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -59375.6091 6946180.517 none Index 27: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -222367.664 7458529.478 none Index 28: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -118104.556 4256832.158 none Index 29: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -81.901539 7744864.152 none Index 30: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5299.52806 10910716.57 none Index 31: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -29963.0467 8363133.086 none Index 32: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -81023.1995 7315046.655 none Index 33: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -39239.8826 6834986.82 none Index 34: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -54956.2152 4451430.2 none Index 35: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -361.670236 7680857.011 none AL07A1.SD9 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A1.SD9 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 13 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 20 3 1.0000 29.0000 4.0000 100 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3603420.88 208612300.6 none Index 1: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -664153.627 208988694.5 none Index 2: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3273153.15 313348199.5 none Index 3: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -23778702.8 1456058335.0 none Index 4: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2147.54593 270539414.2 none Index 5: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1858.24849 262017342.9 none Index 6: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -913813.959 247140179.4 none Index 7: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -22423161.4 1983791190.0 none Index 8: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -920716.478 208761522.6 none Index 9: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -482937.111 264175701.9 none Index 10: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3691.39469 185142383.8 none Index 11: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -31907031.3 1626587690.0 none AL07A2.SD6 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A2.SD6 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 20 3 1.0000 16.0000 10.0000 3 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -600496.04 253292634.9 none Index 1: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -958219.175 438882244.3 none Index 2: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -591590.722 264186606.4 none Index 3: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -878583.218 186868247.2 none Index 4: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -920435.837 127031036.5 none Index 5: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1713864.77 149561069.4 none Index 6: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -180026.836 65831954.14 none Index 7: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -55678.7383 116549396.1 none Index 8: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -6218.50955 72494893.96 none Index 9: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -113402.151 26811619.29 none Index 10: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -326074.818 196670716.7 none Index 11: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -527147.891 285305316.4 none Index 12: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -129125.335 181802784.8 none Index 13: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -176520.423 131441170.6 none Index 14: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -4962.96784 176245576.4 none Index 15: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -4260135.86 182796862.6 none Index 16: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -82942.1749 59285129.97 none Index 17: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -88036.3611 49095800.9 none Index 18: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -64433.1601 66135692.73 none Index 19: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -117894.689 37070692.41 none Index 20: 79.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -661643.733 178402707.2 none Index 21: 90.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3888.78063 368158314.0 none Index 22: 100.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2679.52784 236308287.2 none Index 23: 140.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1067499.48 155696908.1 none Index 24: 160.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1706.45234 181071157.9 none Index 25: 210.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -303395.328 142466505.8 none Index 26: 270.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -262910.786 80212585.01 none Index 27: 340.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -76679.8839 68201465.45 none Index 28: 460.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -69066.6619 46634142.31 none Index 29: 580.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -60168.664 30727923.23 none AL07A2.SD7 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A2.SD7 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB27 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 20 3 1.0000 16.0000 10.0000 10 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 340.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -4026.85047 361670942.8 none Index 1: 460.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -20308.8438 201485604.7 none Index 2: 580.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8536.00034 159966429.2 none Index 3: 720.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -139892.712 142965042.7 none Index 4: 885.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -56179.5699 65678075.79 none Index 5: 1170.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -151.234052 48782343.36 none Index 6: 1870.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -424.232375 42674769.21 none Index 7: 2420.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -131600.957 53437940.1 none Index 8: 2730.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -211.09599 23575167.41 none Index 9: 3550.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -154945.267 29780118.12 none Index 10: 340.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -244932.08 441836315.1 none Index 11: 460.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -205285.453 169822120.2 none Index 12: 580.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -92347.2452 174206688.3 none Index 13: 720.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -149383.573 156668415.9 none Index 14: 885.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -158186.341 109113736.1 none Index 15: 1170.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -998.438006 68087934.72 none Index 16: 1870.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -107756.783 45140422.54 none Index 17: 2420.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -28547.9792 41865644.13 none Index 18: 2730.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -183316.384 25800064.96 none Index 19: 3550.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -407237.501 43525214.52 none Index 20: 340.0000 32.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -263656.685 361439251.0 none Index 21: 460.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -420345.752 133965812.6 none Index 22: 580.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -13353.5157 136516020.5 none Index 23: 720.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -127449.254 122205455.0 none Index 24: 885.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -87954.581 88217756.23 none Index 25: 1170.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -344.949595 56529797.66 none Index 26: 1870.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -242294.8 52948324.76 none Index 27: 2420.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -34479.9731 38239921.36 none Index 28: 2730.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -151064.967 21885994.59 none Index 29: 3550.0000 340.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -108849.59 33045895.36 none AL07A2.SD8 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A2.SD8 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 12 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )70dB31 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )60dB27 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 10 6 1.0000 170.0000 6.0000 3 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -22649.6716 11530941.45 none Index 1: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -53218.1965 12101381.69 none Index 2: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -6871.70173 3279628.997 none Index 3: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -7621.22595 5048297.283 none Index 4: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -385297.522 9365030.748 none Index 5: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -87.1153004 7808871.294 none Index 6: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -678.689798 11290713.5 none Index 7: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -36203.7205 6901382.031 none Index 8: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -10778.9108 2593486.391 none Index 9: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -12627.5527 5266537.213 none Index 10: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -276886.429 9389355.503 none Index 11: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -16236.1929 6323905.605 none Index 12: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -97.2862432 15269761.86 none Index 13: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -73966.572 15408293.91 none Index 14: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -38415.9136 3931869.821 none Index 15: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -29111.4025 4916394.029 none Index 16: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -268277.028 12040753.82 none Index 17: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -394.406807 9741886.975 none Index 18: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2176.47281 10264285.0 none Index 19: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -16752.463 6338248.428 none Index 20: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -9643.47778 2339960.015 none Index 21: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -100675.775 10825659.83 none Index 22: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -119.961165 9194757.462 none Index 23: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -433120.871 9729085.547 none Index 24: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -10074656.2 191630326.4 none Index 25: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -26806.1045 7665805.943 none Index 26: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8645751.7 1263318634.0 none Index 27: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -56638.7469 5127439.236 none Index 28: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -343728.84 9827201.096 none Index 29: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -209344.322 11751711.23 none Index 30: 1170.0000 340.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -26531.26 11391172.46 none Index 31: 1870.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -10800.5158 6920552.537 none Index 32: 2420.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -14044.3421 2942822.154 none Index 33: 2730.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -59309.684 5048297.283 none Index 34: 3550.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3154412.72 29679256.19 none Index 35: 5210.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -143901.809 7783268.437 none AL07A2.SD9 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A2.SD9 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 13 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 20 3 1.0000 29.0000 4.0000 100 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3249.49325 275986015.8 none Index 1: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2857540.53 219185080.2 none Index 2: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1851537.7 276396760.9 none Index 3: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -31237480.5 966346463.3 none Index 4: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1412221.07 299040808.6 none Index 5: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2798.53084 220509866.1 none Index 6: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -596.892097 268737735.4 none Index 7: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -5823.4338 741893506.9 none Index 8: 6850.0000 58.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -794.547372 206000916.3 none Index 9: 11590.0000 106.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2654573.65 146247430.4 none Index 10: 15290.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -7476.07414 242302900.2 none Index 11: 23370.0000 188.00000 20 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -40091389.2 1248194152.0 none AL07A3.SD9 Raw Cross Power Data File U.S. Geological Survey DATA FILE Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files. Electromagnetic Instruments, Inc. AL07A3.SD9 Raw cross power data file used to create AVG file from combined average of multiple frequency band BP and SD cross power files.; Units: none U.S. Geological Survey VERSIONID Software version used to create file Electromagnetic Instruments, Inc. MTACQ 2.00 Software version used to create file; Units: none U.S. Geological Survey DATE TIME Data collection start date and time Electromagnetic Instruments, Inc. 19970824 13 Data collection start date and time; Units: YYYYYMMDD U.S. Geological Survey SURVEY ID Survey name of overall geographic locality of survey area. U.S. Geological Survey Volcanoes Station 7 Survey name of overall geographic locality of survey area.; Units: none U.S. Geological Survey SURVEY CO Surveyor Company Name Electromagnetic Instruments, Inc. USGS GD-MRP Denver Surveyor Company Name; Units: none U.S. Geological Survey CLIENT CO Name of the client that the survey was performed for. Electromagnetic Instruments, Inc. N/A Name of the client that the survey was performed for.; Units: unitless U.S. Geological Survey OPERATOR Name of the field operator collecting the data. Electromagnetic Instruments, Inc. B Rod, J Williams, K Brenner Name of the field operator collecting the data.; Units: unitless U.S. Geological Survey AREA Name of the local area that the data are being collected. Electromagnetic Instruments, Inc. NM, Albuquerque, Volcanoes Name of the local area that the data are being collected.; Units: unitless U.S. Geological Survey REMOTE Remote reference station. Electromagnetic Instruments, Inc. Local B Remote reference station.; Units: unitless U.S. Geological Survey WEATHER Weather description. Electromagnetic Instruments, Inc. sunny, warm, slight breeze Weather description.; Units: unitless U.S. Geological Survey COMMENT 1 Operator comments. Electromagnetic Instruments, Inc. UTM 13 3888905N 3329 Operator comments.; Units: unitless U.S. Geological Survey COMMENT 2 Operator comments. Electromagnetic Instruments, Inc. Lat/Lon 35-07.74N 10 Operator comments.; Units: unitless U.S. Geological Survey NO OF SI Number of sites Electromagnetic Instruments, Inc. 2 Number of sites; Units: unitless U.S. Geological Survey NO OF CH Number of Channels Electromagnetic Instruments, Inc. 9 Number of Channels; Units: unitless U.S. Geological Survey EXT CLOCK External clock used Electromagnetic Instruments, Inc. OFF External clock used; Units: none U.S. Geological Survey POWERLINE Power transmission line center frequency for survey area Electromagnetic Instruments, Inc. 60 Power transmission line center frequency for survey area; Units: Hertz U.S. Geological Survey SITE 1 Site channel numbers recorded Electromagnetic Instruments, Inc. 1,2; 3,4,5 Site channel numbers recorded; Units: unitless U.S. Geological Survey CHANEL 1 Channel information U.S. Geological Survey Ex-1 EF-9515X 215 (888905,332931,0 )40dB21 Channel information; Units: unitless U.S. Geological Survey CHAEXT 1 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2K 2mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 2 Channel information U.S. Geological Survey Ey-1 EF-9515Y 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHAEXT 2 Channel extra information U.S. Geological Survey 30 30dB HF OUT 2k 17mV Channel extra information; Units: unitless U.S. Geological Survey CHANEL 3 Channel information U.S. Geological Survey Hx-1 BF6-9621 215 (888905,332931,0 )60dB23 Channel information; Units: unitless U.S. Geological Survey CHANEL 4 Channel information U.S. Geological Survey Hy-1 BF6-9624 305 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey CHANEL 5 Channel information U.S. Geological Survey Hz-1 BF6-9625 0 (888905,332931,0 )50dB19 Channel information; Units: unitless U.S. Geological Survey DATA TYPE Data type information Electromagnetic Instruments, Inc. SDCP (2i10,3f10.5) (5e15) Data type information; Units: none U.S. Geological Survey PARAMETER Data acquisition parameter information Electromagnetic Instruments, Inc. 10 6 1.0000 310.0000 4.0000 10 Data acquisition parameter information; Units: none U.S. Geological Survey Index 0: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -295.077689 9397517.705 none Index 1: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -1062685.79 16378943.94 none Index 2: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -174016.382 27271389.8 none Index 3: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2413289.62 173178923.1 none Index 4: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -143.584023 9003860.546 none Index 5: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -422369.721 12571781.08 none Index 6: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -81.0953773 51283250.94 none Index 7: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -19739.925 175218722.0 none Index 8: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -36.6135001 8492943.808 none Index 9: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -453930.352 14480452.3 none Index 10: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -558.917886 44655542.66 none Index 11: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2125.24933 115044655.6 none Index 12: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -330.837896 8012737.912 none Index 13: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -728303.06 17569954.78 none Index 14: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -139.828856 44818519.1 none Index 15: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -3579311.63 224377874.5 none Index 16: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -164680.218 13470892.14 none Index 17: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -322905.412 18017856.29 none Index 18: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -953344.722 47534792.98 none Index 19: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -8191.70976 112052950.6 none Index 20: 6850.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -692.225607 7440399.49 none Index 21: 11590.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -972364.746 12419087.38 none Index 22: 15290.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -452.125918 30965522.28 none Index 23: 23370.0000 620.00000 10 1 Frequency value (format: F10.4), Bandwidth (format: F10.5), Number of averages used in data block (format: I4), Number of FFT coefficients (format: I4) U.S. Geological Survey -2525.23739 168283405.8 none Binary File, AL07A1.FC6 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A1.FC7 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A1.FC8 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A1.FC9 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A2.FC6 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A2.FC7 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A2.FC8 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A2.FC9 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 Binary File, AL07A3.FC9 is a raw Fourier Coefficient Binary Data File. The header information for this file contains field notes including survey identifier, personnel, date/time, weather, indication of a remote MT site, additional comments and sensor configuration for the electric and magnetic field channels. This binary file and associated files that have been converted to text can be found at: https://www.sciencebase.gov/catalog/item/64b8c9fbd34e70357a2bdf37 ScienceBase U.S. Geological Survey mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. 20250710 Philip Brown U.S. Geological Survey Geophysicist Physical

Denver Federal Center, PO Box 25046, MS 973

Denver CO 80225-0046 USA 303-236-1310 pbrown@usgs.gov Additional information about metadata creator: Brown, P.J., http://orcid.org/0000-0002-2415-7462 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998