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Metadata
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ID
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EW9410
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Also Known As
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E-10-94-BS
EW9410
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Abstract
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Lamont-Doherty Earth Observatory. Chief Scientist: Simon
Klemperer. Geophysical survey data (multichannel, sonobuoy,
gravity, magnetics, 3dot5khz) of field activity EW9410
(E-10-94-BS) in Bering Sea, Chukchi Sea from 08/06/1994 to
09/01/1994
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Organization
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Lamont-Doherty Earth Observatory
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Project/Theme
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Deep Seismic Investigation of the Continental Crust, Bering and Chukchi Seas, Alaska
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Chief Scientist
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Simon Klemperer
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Activity Type
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Geophysical survey
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Platform
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Maurice Ewing
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Area of Operation
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Bering Sea, Chukchi Sea
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Location map
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Bounding Coordinates
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71.82599
-178.49923 -154.28032
53.84387
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Ports
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leave Dutch Harbor, AK
arrive Dutch Harbor, AK
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Dates
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08/06/1994 (JD 218) to 09/01/1994 (JD 244)
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Analog Materials
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No analog holdings.
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Index map
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Information Specialist
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Crew
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Simon Klemperer
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Chief Scientist, Stanford University
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Jon Childs
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Geophysicist, USGS Western Region
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Brian Galloway
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Geophysicist, Stanford University
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Nikita Bogdanov
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Geologist, Institute of the Lithosphere, Russian Academy of Sciences
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Helios Gnibidenko
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Geophysicist, Institute of Oceanology, Russian Academy of Sciences
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Terri Plake
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Geologist, Western Washington University
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Arsenio Tepano
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Watchstander, Western Washington University
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Marian Cline
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Watchstander, Princeton University
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Joe Stennett
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Science Officer, LDEO
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Bill Robinson
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Data Analyst, LDEO
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Brian McKenna
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Computer Technician, Digicon Inc.
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Equipment Used
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multichannel
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sonobuoy
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gravity
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magnetics
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3dot5khz
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Purpose
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Stanford University, in conjunction with the U.S. Geological
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Survey, and with participation by the Institute of the Lithosphere
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and the Institute of Oceanology of the Russian Academy of Sciences,
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and the Geodynamics Research Institute of Texas A&M University,
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conducted deep seismic investigations of the continental crust
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beneath the Bering and Chukchi seas, Alaska, during the month of
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August, 1994.
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Summary
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Cruise Report (.pdf)
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STANFORD UNIVERSITY, IN CONJUNCTION WITH THE U.S. GEOLOGICAL SURVEY,
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AND WITH PARTICIPATION BY THE INSTITUTE OF THE LITHOSPHERE AND THE
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INSTITUTE OF OCEANOLOGY OF THE RUSSIAN ACADEMY OF SCIENCES, AND THE
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GEODYNAMICS RESEARCH INSTITUTE OF TEXAS A&M UNIVERSITY, CONDUCTED
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DEEP SEISMIC INVESTIGATIONS OF THE CONTINENTAL CRUST BENEATH THE
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BERING AND CHUKCHI SEAS, ALASKA, DURING THE MONTH OF AUGUST, 1994.
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THE DATA WAS RECORDED TO TWO-WAY TRAVEL-TIMES OF 15 TO 23 SECONDS,
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WITH 50 TO 75 METER SHOT SPACING.
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TWO NORTH-SOUTH TRANSECTS WERE PROFILED. THE EASTERN TRANSECT EXTENDED
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FROM 58(50'N, 169(32'W, WELL WITHIN THE CONTINENTAL SHELF OF THE
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BERING SEA, NORTH OF THE PRIBILOF ISLANDS, TO JUST SOUTH OF THE SHELF
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EDGE NORTH OF BARROW, ALASKA, AT 71(49'N, 154(33'W. ICE PREVENTED
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CONTINUATION OF THE LINE BEYOND THE SHELF EDGE. THE WESTERN TRANSECT
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EXTENDED FROM THE CENTRAL CHUKCHI SEA, WELL WITHIN THE SHELF AT
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71(23'N, 163(00'W, INTO THE ALEUTIAN BASIN AT 58(00'N, 178(30'W, NEAR
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NAVARINSKY CANYON. AN ADDITIONAL SHORT LINE CROSSING OVER THE
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BERINGIAN MARGIN A SECOND TIME WAS RECORDED NEAR ZEMCHUG CANYON EAST
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OF THE WESTERN TRANSECT.
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THE PROFILES CROSS IMPORTANT STRIKE-SLIP FAULTS, POSSIBLE TERRANE
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BOUNDARIES, TWO CONTINENTAL MARGINS, AND SEVERAL CRETACEOUS/TERTIARY
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SEDIMENTARY BASINS (NORTON, HOPE, CHUKCHI, AND NAVARIN BASINS).
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TOGETHER WITH THE PRECEDING CRUISE EW94-09, THE PROFILES PROVIDE A
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CONTINUOUS TRANSECT ACROSS THE NORTH AMERICAN CONTINENT, FROM THE
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PACIFIC TO THE ARCTIC OCEAN (SEE FIGURES 7 THROUGH 9 FOR DATA EXAMPLES).
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MOST OF THE MULTI-CHANNEL SEISMIC (MCS) DATA IS OF HIGH QUALITY,
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BUT BAD WEATHER, STRONG CURRENTS, AND RECORDING PROBLEMS SOMETIMES
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PRESENTED DIFFICULTIES DURING DATA ACQUISITION. GRAVITY, MAGNETIC,
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AND SONOBUOY DATA WERE ALSO RECORDED ALONG THE PROFILES. WIDE-ANGLE
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RECORDING WAS DONE IN CONJUNCTION WITH THE SEISMIC PROFILING, AT
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RECORDING SITES LOCATED ALONG THE CENTRAL WEST COAST OF ALASKA AND
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THE CHUKCHI PENINSULA, AS WELL AS ON ISLANDS IN THE BERING STRAIT
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AND BERING SEA.
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Got Help?
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For EW9410, we would appreciate any information on -- crew, information to be derived, equipment used, information specialist, publications, purpose, summary.
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