NAMSS East Coast Data
Entry ID: NAMSS_East_Coast

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Summary
Abstract: High-quality seismic reflection data are essential to geological investigation
of the offshore. Over the past thirty years the USGS has acquired approximately
12,000 km of 2D data off the west coast of the United States. During this same
period the petroleum exploration industry acquired probably 30 to 50 times that
amount. To date, these data have been proprietary and available for publishable
research only with significant restrictions. Although the commercial value of
these data has diminished as a result of technological advances and offshore
development moratoria, these data continue to have great relevance and value to
current and future scientific research efforts. The value and risk of loss of
these data was recently the subject of a National Research Council report
"Geoscience Data and Collections: National Resources in Peril" by the Committee
on the Preservation of Geoscience Data and Collections, Committee on Earth
Resources.

Recently, two companies with perhaps the largest holdings of proprietary data
off the US west coast, WestemGeco and ChevronTexaco, have offered to transfer
more than 250,000 km to the USGS for the purpose of making those data publicly
available for research and educational purposes. Extension of these offers to
include data offshore Alaska and the east coast of the U.S. is under
discussion. The data being offered are for the most part conventional 2D
multichannel airgun seismic reflection acquired and processed according to
standards of the mid 1970's and early 1980's. The data commonly were acquired
using a 5-to-25 element tuned airgun source totaling 1,000 to 3,000 cubic
inches; 24-fold to 48-fold stacking; 25-to-50 meter CDP interval; 6 second
recording with 4 msec sampling; processed through stack and post-stack
migration. The surveys were generally limited to the continental shelf,
extending up to 150 miles offshore southern California. Line spacing is dense
off southern California, and becomes sparser to the north.

http://walrus.wr.usgs.gov/NAMSS/

Related URL
Link: GET RELATED SERVICE METADATA (SERF)
Description: Metadata record of NAMSS


Link: VIEW RELATED INFORMATION
Description: More background information is available about NAMSS.


Geographic Coverage
 N: 41.0 S: 25.0  E: -65.0  W: -80.0

Data Set Citation
Dataset Title: NAMSS East Coast Data
Dataset Publisher: Western Coastal & Marine Geology, USGS
Online Resource: http://walrus.wr.usgs.gov/NAMSS/search_and_download_data.html


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CONNECTICUT
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > DELAWARE
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GEORGIA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MARYLAND
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW JERSEY
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW YORK
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH CAROLINA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > RHODE ISLAND
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > SOUTH CAROLINA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > VIRGINIA


Science Keywords
OCEANS >MARINE SEDIMENTS >STRATIGRAPHIC SEQUENCE    [Definition]
SOLID EARTH >TECTONICS >EARTHQUAKES    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >FAULT MOVEMENT    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >FOLDS    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >STRATIGRAPHIC SEQUENCE    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION
OCEANS


Platform
SHIPS    [Information]


Instrument
SEISMIC REFLECTION PROFILERS    [Information]
SEISMOMETERS    [Information]


Originating Center
USGS


Data Center
American Geological Institute    [Information]
Data Center URL: http://www.agiweb.org/

Data Center Personnel
Name: CHRISTOPHER M. KEANE
Phone: (703) 379-2480
Fax: (703) 379-7563
Email: keane at agiweb.org
Contact Address:
American Geological Institute
4220 King Street
City: Alexandria
Province or State: VA
Postal Code: 22302-1502
Country: USA


National Archive of Marine Seismic Surveys, Western Region CMG, Coastal and Marine Geology, U.S. Geological Survey, U.S. Department of the Interior    [Information]
Data Center URL: http://walrus.wr.usgs.gov/NAMSS/

Data Center Personnel
Name: JONATHAN R. CHILDS
Phone: (415) 329-5195
Fax: (415) 329-5197
Email: jchilds at usgs.gov
Contact Address:
U.S. Geological Survey
M/S 999
345 Middlefield Rd.
City: Menlo Park
Province or State: CA
Postal Code: 94025
Country: USA


Chevron Corp.    [Information]
Data Center URL: http://www.chevron.com/

Data Center Personnel
Name: CHEVRONTEXACO
Phone: +1-925-842-1000
Email: comment at chevrontexaco.com
Contact Address:
ChevronTexaco Headquarters
6001 Bollinger Canyon Rd.
City: San Ramon
Province or State: CA
Postal Code: 94583
Country: USA



Distribution
Distribution_Size: 64 kb
Fees: none


Personnel
TYLER B. STEVENS
Role: DIF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


JONATHAN R. CHILDS
Role: TECHNICAL CONTACT
Phone: (415) 329-5195
Fax: (415) 329-5197
Email: jchilds at usgs.gov
Contact Address:
U.S. Geological Survey
M/S 999
345 Middlefield Rd.
City: Menlo Park
Province or State: CA
Postal Code: 94025
Country: USA


PATRICK E. HART
Role: TECHNICAL CONTACT
Phone: 650-329-5160
Fax: 650-329-5190
Email: hart at usgs.gov
Contact Address:
345 Middlefield Road
USGS
City: Menlo Park
Province or State: CA
Postal Code: 94025
Country: USA



Creation and Review Dates
DIF Creation Date: 2005-03-07
Last DIF Revision Date: 2011-07-01

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