Katherine L. Maier
Charles K. Paull
Mary McGann
James E. Conrad
20160325
Raw computed tomography (CT) images of sediment cores collected in 2009 offshore from Palos Verdes, California
.zip (zipped file of DICOM files)
data release
DOI:10.5066/F7G44NB6
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/F7G44NB6
https://www.sciencebase.gov/catalog/item/5efe1b6a82ce3fd7e8a811bf
Katherine L. Maier
Charles K. Paull
Mary McGann
James E. Conrad
2016
Sediment core data from offshore Palos Verdes, California
data release
DOI:10.5066/F7G44NB6
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/F7G44NB6
This part of the data release includes raw computed tomography (CT) images of sediment cores collected in 2009 offshore of Palos Verdes, California. It is one of seven files included in this U.S. Geological Survey data release that include data from a set of sediment cores acquired from the continental slope, offshore Los Angeles and the Palos Verdes Peninsula, adjacent to the Palos Verdes Fault. Gravity cores were collected by the USGS in 2009 (cruise ID S-I2-09-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=SI209SC), and vibracores were collected with the Monterey Bay Aquarium Research Institute's remotely operated vehicle (ROV) Doc Ricketts in 2010 (cruise ID W-1-10-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=W110SC). One spreadsheet (PalosVerdesCores_Info.xlsx) contains core name, location, and length. One spreadsheet (PalosVerdesCores_MSCLdata.xlsx) contains Multi-Sensor Core Logger P-wave velocity, gamma-ray density, and magnetic susceptibility whole-core logs. One zipped folder of .bmp files (PalosVerdesCores_Photos.zip) contains continuous core photographs of the archive half of each core. One spreadsheet (PalosVerdesCores_GrainSize.xlsx) contains laser particle grain size sample information and analytical results. One spreadsheet (PalosVerdesCores_Radiocarbon.xlsx) contains radiocarbon sample information, results, and calibrated ages. One zipped folder of DICOM files (PalosVerdesCores_CT.zip) contains raw computed tomography (CT) image files. One .pdf file (PalosVerdesCores_Figures.pdf) contains combined displays of data for each core, including graphic diagram descriptive logs. This particular metadata file describes the information contained in the file PalosVerdesCores_CT.zip. All cores are archived by the U.S. Geological Survey Pacific Coastal and Marine Science Center.
The sediment cores and subsequent core data were collected to investigate the Palos Verdes Fault and continental slope sedimentation.
2009
2010
ground condition at the time the cores were collected
As needed
-118.15795898325
-117.99316406138
33.593666691854
33.355402040003
USGS Metadata Identifier
USGS:5efe1b6a82ce3fd7e8a811bf
USGS Thesaurus
gravity coring
ocean processes
sediment transport
Quaternary
Holocene
Pleistocene
ISO 19115 Topic Category
oceans
geoscientificInformation
Data Categories for Marine Planning
Substrate
Distributions
Global Change Master Directory (GCMD)
sedimentation
sediment composition
sediment transport
Marine Realms Information Bank (MRIB) keywords
sediment
Geographic Names Information System (GNIS)
Palos Verdes Peninsula
Los Angeles
NGA GEOnet Names Server
San Gabriel Canyon
none
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and Monterey Bay Aquarium Research Institute as the originator(s) of the dataset and in products derived from these data.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
U.S. Geological Survey Pacific Coastal and Marine Science Center and Monterey Bay Aquarium Research Institute
D.S. Brothers
J.E. Conrad
K.L. Maier
C.K. Paull
M. McGann
D.W. Caress
2015
The Palos Verdes Fault offshore southern California: Late Pleistocene to Present tectonic geomorphology, seascape evolution and slip-rate estimate based on AUV and ROV surveys
http://dx.doi.org/10.1016/j.margeo.2016.10.001
K.L. Maier
D.S. Brothers
C.K. Paull
M. McGann
D.W. Caress
J.E. Conrad
2016
Records of continental slope sediment flow morphodynamic responses to gradient and active faulting from integrated AUV and ROV data, offshore Palos Verdes, southern California Borderland
http://dx.doi.org/10.1002/2015JB011938
No formal attribute accuracy tests were conducted
No formal logical accuracy tests were conducted
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.
No formal positional accuracy tests were conducted
No formal positional accuracy tests were conducted
The USGS recovered gravity cores with the R/V Robert Gordon Sproul in 2009 from six sites flanking the Palos Verdes Fault on the continental slope northwest of San Gabriel Canyon (see cruise ID S-I2-09-SC (http://cmgds.marine.usgs.gov/fan_info.php?fan=SI209SC) for additional information), and in 2010, the Monterey Bay Aquarium Research Institute (MBARI) collected vibracores along transects in the same area using their remotely operated vehicle (ROV) Doc Ricketts aboard the R/V Western Flyer (see cruise ID W-1-10-SC (http://cmgds.marine.usgs.gov/fan_info.php?fan=W110SC) for additional information). Five of these cores were scanned with x-ray commuted tomography (CT) using a GE LightSpeed Ultra instrument at a Stanford University Petroleum Research Institute (SUPRI-A) Enhanced Oil Recovery and Unconventional Resources laboratory facility of Anthony Kovscek in Stanford, California. Split core tubes (i.e., D-tubes) containing about 150 cm of core material were scanned in either 1.25 mm (DR136 VC-134; DR135 VC-131; PV2-G1 section 1) or 2.50 mm (DR125 VC-89, PV2-G1) axial slices at 120 kV and 200 mA. Laboratory assistance was provided by Elliot Kim and Jason Addison.
2015
Data and metadata files were moved to a different location on ScienceBase, resulting in a change of ID number in the Online_Linkage and Network_Resources URLs of the metadata. In addition, edits were made as needed to bring the metadata up to current PCMSC standards including standardizing doi# links, correcting typos, adding disclaimers, and refining keywords. Point of Contact and Metadata Contact information sections were changed to static PCMSC contact information. No data were changed. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version.
2020702
Susan A Cochran
U.S. Geological Survey, Pacific Coastal and Marine Science Center
mailing and physical
2885 Mission St.
Santa Cruz
CA
95060
United States
831-460-7545
scochran@usgs.gov
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
20201019
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
none
Point
0.001
0.001
Decimal degrees
WGS 84
WGS 84
6378137.0
298.257223563
water depth (depth below sea level)
0.1
meters below sea level
Explicit depth coordinate included with horizontal coordinates
CT scan DICOM files are presented for four sediment cores. The zip file "PalosVerdesCores_CT.zip" contains five zipped files, each containing DICOM files for a single scanned D-tube. These files are named by core ID and section number (for example, DR125VC-89_Section1.zip; see PalosVerdesCores_Info.xlsx, this data release, for more information on cores IDs). Sections 1 for three cores were scanned together in a single D-tube are contained in the file "PV2-G1_DR136VC-134_DR135VC-131_Sections1.zip" (named from the top to bottom of the image). DR125 VC-89 Section 2 was not scanned because it is mostly the empty core catcher (see PalosVerdesCores_Figures.pdf and PalosVerdesCores_Photos.zip, this data release, for more information). All quantitative data in these files is in Hounsfield units.
Sediment core computed tomography (CT) scans are available in file PalosVerdesCores_CT.zip at: https://doi.org/10.5066/F7G44NB6
U.S. Geological Survey - ScienceBase
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 on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
DICOM
zip file contains five other zip files of individual CT images in DICOM format
Winzip, 7-zip, or Winrar are free software that will open .zip files
812.7
https://www.sciencebase.gov/catalog/file/get/5efe1b6a82ce3fd7e8a811bf
https://doi.org/10.5066/F7G44NB6
Data can be downloaded using the Network Resource links. The first link will begin a direct download of the CT data and metadata. The second link is a landing page for the entire Palos Verdes Cores data release.
None.
20201019
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998