National Oceanic and Atmospheric Administration U.S. Geological Survey 2011 1.0 raster digital data Open-File Report 2011-1004 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.3133/ofr20111004 http://pubs.usgs.gov/of/2011/1004/data/bathy/grids/geo/h11922_2m_geo.zip http://pubs.usgs.gov/of/2011/1004/html/catalog.html L.J. Poppe K.Y. McMullen S.D. Ackerman D.S. Blackwood B.J. Irwin J.D. Schaer M.R. Forrest 2011 1.0 Open-File Report 2011-1004 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2011/1004/ The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities off southern New England, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. During July-August 2008 NOAA completed hydrographic survey H11922 west of Gay Head, Massachusetts, in Rhode Island Sound and during July and September 2010 bottom photographs and surficial sediment data were acquired as part of ground-truth reconnaissance surveys of this area. Interpretations were derived from the multibeam echo-sounder data and the ground-truth data used to verify them. For more information on the ground-truth surveys see http://quashnet.er.usgs.gov/data/2010/10033/ and http://quashnet.er.usgs.gov/data/2010/10005/ To release a 2-m grid of the multibeam bathymetry generated during NOAA survey H11922 in Rhode Island Sound west of Gay Head, Massachusetts in geographic, WGS84. 20080716 20080822 ground condition Complete None planned -71.109892 -70.867214 41.370902 41.245388 USGS Metadata Identifier USGS:ad3d95d1-81a2-48b5-b067-99467d0d9e47 None U.S. Geological Survey USGS Woods Hole Coastal and Marine Science Center multibeam bathymetry Coastal and Marine Geology Program CMGP WHCMSC RESON 8101 NOAA survey H11922 H11922 National Oceanic and Atmospheric Administration NOAA grid Open-File Report 2011-1004 ArcRaster grid OFR 2011-1004 RESON 8125 RESON 7125 bathymetry NOAA Ship Thomas Jefferson ISO 19115 Topic Category elevation oceans USGS Thesaurus bathymetry sea-floor characteristics multibeam sonar marine geophysics geospatial datasets None U.S. East Coast United States North America Atlantic Ocean Rhode Island Sound Gay Head Massachusetts Cuttyhunk Island Nomans Land Aquinnah None Data are not to be used for navigation purposes. Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the National Oceanic and Atmospheric Administration (NOAA) and U.S. Geological Survey (USGS) as the originators of this information. U.S. Geological Survey Larry Poppe Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2314 (508) 457-2310 lpoppe@usgs.gov http://pubs.usgs.gov/of/2011/1004/data/bathy/grids/geo/h11922_2m_geo.gif Thumbnail image showing the 2-m gridded multibeam bathymetry collected during NOAA survey H11922 in geographic, WGS84 GIF Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500 P. Tod Schattgen 2008 1.0 document Descriptive Report H11922 Atlantic Hydrographic Branch, Norfolk, VA National Ocean Survey, National Oceanic and Atmospheric Administration http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11922/DR/H11922.pdf Poppe, L.J. Ackerman, S.D. Foster, D.S. Blackwood, D.S. Butman, B. Moser, M.S. Stewart, H.F. 2007 1.0 GIS data report Open-File Report 2006-1357 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2006/1357/ Poppe, L.J. Ackerman, S.D. Foster, D.S. Blackwood, D.S. Williams, S.J. Moser, M.S. Stewart, H.F. Glomb, K.A. 2007 1.0 Open-File Report 2007-1138 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2007/1138/ Poppe, L.J. McMullen, K.Y. Foster, D.S. Blackwood, D.S. Williams, S.J. Ackerman, S.D. Barnum, S.R. Brennan, R.T. 2008 1.0 Open-File Report 2008-1004 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2008/1004/ Poppe, L.J. McMullen, K.Y. Foster, D.S. Blackwood, D.S. Williams, S.J. Ackerman, S.D. Moser, M.S. Glomb, K.A. 2010 1.0 Open-File Report 2009-1001 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2009/1001/ McMullen, K.Y. Poppe, L.J. Soderberg, N.K. 2009 1.0 Open-File Report 2009-1003 Reston, VA U.S. Geological Survey 12 DVD-ROMs http://pubs.usgs.gov/of/2009/1003/ McMullen, K.Y. Poppe, L.J. Denny, J.F. Haupt, T.A. Crocker, J.M. 2008 1.0 Open-File Report 2007-1366 Reston, VA U.S. Geological Survey 1 DVD-ROM http://pubs.usgs.gov/of/2007/1366/ McMullen, K.Y. Poppe, L.J. Ackerman, S.D. Blackwood, D.S. Schaer, J.D. Nadeau, M.A. Wood, D.A. 2011 1.0 GIS data report Open-File Report 2011-1005 Reston, VA U.S. Geological Survey 1 DVD-ROM Also available at http://pubs.usgs.gov/of/2011/1005/ No additional checks for consistency were performed on this data. All collected data were processed and used to produce this dataset. Horizontal position of the ship and launches acquiring multibeam bathymetry were determined by differential GPS. Real-time original horizontal resolution of the MBES data was 0.5 m for depths less than 20 m and 2 m for the deeper areas; the final CARIS combined base surface for the MBES data were produced at a 2-m cell size. Attitude of the vessels (e.g. pitch, roll, and heave) acquiring multibeam bathymetry were monitored by Applanix TSS POS/MV 320 Version 3 GPS aided navigation systems. The vertical resolution of the original bathymetry data is approximately 0.5% of the water depth. National Ocean Survey, National Oceanic and Atmospheric Administration Unpublished Material raster digital data disc 20080716 20080822 ground condition Information unavailable from original metadata. Original processed multibeam bathymetric data. Two 8.5-m aluminum Jensen launches and the NOAA Ship Thomas Jefferson were used to acquire the multibeam echosounder (MBES) bathymetric data for survey H11922 during July-August 2008 in Rhode Island Sound west of Gay Head, Massachusetts. The launch MBES data were collected with hull-mounted RESON SeaBat 240-kHz 8101 and 455-kHz 8125 shallow-water systems. These systems measure two-way sound travel time across a 150-degree swath and 120-degree swath, respectively. The SeaBat 8101 has 101 beams at a 1.5-degree beam spacing. The SeaBat 8125 has 240 beams with a cross-track beam width of 0.5 degrees at nadir. The ship's MBES data were collected with a RESON 7125 system which measured two-way sound travel time across a 140-degree swath. Original horizontal resolution of the MBES data was 0.5 m for depths less than 20 m and 2 m for the deeper areas. Vertical resolution of the MBES data is about 0.5% of the water depth. The bathymetric data were acquired in XTF (extended Triton data format) and processed by NOAA using CARIS HIPS (Hydrographic Image Processing System) software for quality control, to incorporate sound velocity and tidal corrections, and to produce the continuous digital terrain model. All positioning and attitude were determined with Trimble DSM212L DGPS receivers and Applanix POS/MV Model 320 v.4 inertial navigation systems; HYPACK MAX was used for acquisition line navigation. Sound velocity corrections were derived using frequent SEACAT CTD (conductivity-temperature-depth) profiles. Typically, a CTD cast was conducted every three to four hours of MBES acquisition. Tidal zone corrections were calculated from data acquired from National Water Level Observation stations at Newport, RI and Menemsha Harbor, MA. Vertical datum is mean lower low water. Individuals interested in detail descriptions of the MBES acquisition and processing should consult the descriptive reports. The data were gridded to 2-m resolution and saved as a CARIS HIPS database in UTM Zone 19, NAD83. 2008 H11922 CARIS HIPS database National Oceanic and Atmospheric Administration Jasper Schaer Field Operations Officer mailing address

439 West York Street

Norfolk VA 23510 USA 757-441-6746 jasper.schaer@noaa.gov The gridded Base surface H11922_Combined_2m_CUBE_Deep_Final (fieldsheet H11922_Combined) was imported from the H11922 CARIS HIPS database using Fledermaus v7.1.0beta. Defined input coordinate system as FP_NAD83_UTM_zone_19N, the output coordinate system as FP_NAD83_UTM_zone_19N, and the output SD type as SonarDTM. Created the SD file: H11922_Combined_2m_CUBE_Deep_Final.sd H11922 CARIS HIPS database 2010 H11922_Combined_2m_CUBE_Deep_Final.sd Seth Ackerman U.S. Geological Survey GIS Specialist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2315 508-457-2310 sackerman@usgs.gov The H11922 DTM file was then exported as an ESRI ASCII raster file from the DMagic v7.1.0 beta program. H11922_Combined_2m_CUBE_Deep_Final.sd 2010 h11922_avgrid.asc Seth Ackerman U.S. Geological Survey GIS Specialist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543 USA 508-548-8700 x2315 508-457-2310 sackerman@usgs.gov The ESRI ASCII raster file was then imported into ArcCatalog v9.3 and converted to an ESRI 32-bit floating point grid using the ASCII to Raster conversion tool (ArcToolbox - Conversion Tools - To Raster - ASCII to Raster). h11922_avgrid.asc 2010 h11922_2m_utm Seth Ackerman U.S. Geological Survey GIS Specialist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2315 508-457-2310 sackerman@usgs.gov Defined the projection as UTM Zone 19, NAD83 using ArcCatalog v9.3 (ArcToolbox - Data Management Tools - Projections and Transformations - Define Projection). h11922_2m_utm 2010 h11922_2m_utm Seth Ackerman U.S. Geological Survey GIS Specialist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2315 508-457-2310 sackerman@usgs.gov The UTM grid was reprojected into a geographic grid, WGS84 using ArcCatalog v9.3 using Data Management Tools, Projections and Transformations, Raster, Project Raster). The resampling technique was bilinear; the transformation was NAD_1983_To_WGS_1984_1 #; other used parameters were defaults. h11922_2m_utm 2010 h11922_2m_geo Seth Ackerman U.S. Geological Survey GIS Specialist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543 USA 508-548-8700 x2315 508-457-2310 sackerman@usgs.gov Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Fixed link to browse graphic. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. 20160523 U.S. Geological Survey VeeAnn A. Cross Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov USGS Thesaurus keywords added to the keyword section. 20180720 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Crossref DOI link was added as the first link in the metadata. 20191118 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Raster Grid Cell 5907 11421 1 0.000024 0.000019 Decimal degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 Mean lower low water 0.1 meters Explicit depth coordinate included with horizontal coordinates A 2-m grid of the multibeam bathymetry from NOAA survey H11922 in the geographic, WGS84 coordinate system. U.S. Geological Survey U.S. Geological Survey Larry Poppe Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2314 (508) 457-2310 lpoppe@usgs.gov Downloadable Data Neither the U.S. Government, the Department of the Interior, nor the USGS, nor the National Oceanic and Atmospheric Administration (NOAA), nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS or NOAA in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. AIG ArcGIS 9.3 ESRI ArcRaster Grid One file (h11992_2m_geo.zip) containing the ArcGIS grid file components, browse graphic and metadata. zip archive 66.5 http://pubs.usgs.gov/of/2011/1004/data/bathy/grids/geo/h11922_2m_geo.zip http://pubs.usgs.gov/of/2011/1004/html/catalog.html Data are downloadable via the World Wide Web (WWW). DVD-ROM 4.75 Mbytes UDF None The user must have a program capable of reading the ESRI grid data format. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware. The directory structure as it appears in the WinZip file must be maintained or else the binary grid is unusable. 2011 20211116 Larry Poppe U.S. Geological Survey Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2314 (508) 457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None