USGS CMG EW9410 Metadata

Stanford University, in conjunction with the U.S. Geological
Survey, and with participation by the Institute of the Lithosphere
and the Institute of Oceanology of the Russian Academy of Sciences,
and the Geodynamics Research Institute of Texas A&M University,
conducted deep seismic investigations of the continental crust
beneath the Bering and Chukchi seas, Alaska, during the month of
August, 1994.

Cruise Report (.pdf)

STANFORD UNIVERSITY, IN CONJUNCTION WITH THE U.S. GEOLOGICAL SURVEY,
AND WITH PARTICIPATION BY THE INSTITUTE OF THE LITHOSPHERE AND THE
INSTITUTE OF OCEANOLOGY OF THE RUSSIAN ACADEMY OF SCIENCES, AND THE
GEODYNAMICS RESEARCH INSTITUTE OF TEXAS A&M UNIVERSITY, CONDUCTED
DEEP SEISMIC INVESTIGATIONS OF THE CONTINENTAL CRUST BENEATH THE
BERING AND CHUKCHI SEAS, ALASKA, DURING THE MONTH OF AUGUST, 1994.
THE DATA WAS RECORDED TO TWO-WAY TRAVEL-TIMES OF 15 TO 23 SECONDS,
WITH 50 TO 75 METER SHOT SPACING. 

TWO NORTH-SOUTH TRANSECTS WERE PROFILED. THE EASTERN TRANSECT EXTENDED
FROM 58(50'N, 169(32'W, WELL WITHIN THE CONTINENTAL SHELF OF THE
BERING SEA, NORTH OF THE PRIBILOF ISLANDS, TO JUST SOUTH OF THE SHELF
EDGE NORTH OF BARROW, ALASKA, AT 71(49'N, 154(33'W. ICE PREVENTED
CONTINUATION OF THE LINE BEYOND THE SHELF EDGE. THE WESTERN TRANSECT
EXTENDED FROM THE CENTRAL CHUKCHI SEA, WELL WITHIN THE SHELF AT
71(23'N, 163(00'W, INTO THE ALEUTIAN BASIN AT 58(00'N, 178(30'W, NEAR
NAVARINSKY CANYON. AN ADDITIONAL SHORT LINE CROSSING OVER THE
BERINGIAN MARGIN A SECOND TIME WAS RECORDED NEAR ZEMCHUG CANYON EAST
OF THE WESTERN TRANSECT. 

THE PROFILES CROSS IMPORTANT STRIKE-SLIP FAULTS, POSSIBLE TERRANE
BOUNDARIES, TWO CONTINENTAL MARGINS, AND SEVERAL CRETACEOUS/TERTIARY
SEDIMENTARY BASINS (NORTON, HOPE, CHUKCHI, AND NAVARIN BASINS).
TOGETHER WITH THE PRECEDING CRUISE EW94-09, THE PROFILES PROVIDE A
CONTINUOUS TRANSECT ACROSS THE NORTH AMERICAN CONTINENT, FROM THE
PACIFIC TO THE ARCTIC OCEAN (SEE FIGURES 7 THROUGH 9 FOR DATA EXAMPLES).

MOST OF THE MULTI-CHANNEL SEISMIC (MCS) DATA IS OF HIGH QUALITY,
BUT BAD WEATHER, STRONG CURRENTS, AND RECORDING PROBLEMS SOMETIMES
PRESENTED DIFFICULTIES DURING DATA ACQUISITION. GRAVITY, MAGNETIC,
AND SONOBUOY DATA WERE ALSO RECORDED ALONG THE PROFILES. WIDE-ANGLE
RECORDING WAS DONE IN CONJUNCTION WITH THE SEISMIC PROFILING, AT
RECORDING SITES LOCATED ALONG THE CENTRAL WEST COAST OF ALASKA AND
THE CHUKCHI PENINSULA, AS WELL AS ON ISLANDS IN THE BERING STRAIT
AND BERING SEA.

Brocher, T.M., Allen, R.M., Stone, D.B., Wolf, L.W., and Galloway, B.K., 1995,
Data report for onshore-offshore wide-angle seismic recordings in the
Bering-Chukchi Sea, western Alaska and eastern Siberia, 57 p., U.S. Geological
Survey Open-File Report 95-650, URL:
http://pubs.er.usgs.gov/publication/ofr95650
Additional publication information at:
http://www.dggs.dnr.state.ak.us/pubs/id/11912