National Centers for Environmental Information (NCEI)

MULTICHANNEL SEISMIC-REFLECTION PROFILES
Norton Sound and Eastern Bering Sea, Alaska

Data Announcement 84-MGG-09

Approximately 3,013 km of 24-channel seismic-reflection profiles for the Norton Sound area extending out to the eastern Bering Sea. The profiles were collected by the U.S. Geological Survey (USGS) Research Vessel S.P. LEE during the summer of 1978 (USGS Open File Report 84-4).* A sound source of five airguns was used with a volume of 1,326 cu. in. of air compressed to approximately 2,000 psi. The recording system consisted of a 24-group streamer, 2,400 m long and a GUS (Global Universal Science) model 4200 recording instrument. Shots were fired every 50 m with the group interval at 100 m. A 2-msec sampling rate was used in the field. The field data were later desampled to 4 msec during the demultiplexing process. Navigational control for the survey was by a Marconi integrated satellite-Doppler sonar navigation system. The seismic reflection record lengths are 7 sec. The data have been processed in a sequence of editing, demultiplexing, velocity analysis, stacking, deconvolution-filtering, and displayed on an electrostatic plotter.
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* "Multichannel Seismic-Reflection Profiles Collected in 1978 in Norton Sound and the Eastern Bering Sea," by Dennis M. Mann and Michael A. Fisher, U.S. Geological Survey, Menlo Park, CA, USGS Open File Report 84-4.

DATA AVAILABLE

     Multichannel seismic profiles for 28 lines available in plastic sepia, paper sepia, and blackline.

     Trackline navigation and shot-point map available in plastic sepia, paper sepia, and blackline.

     Shot-point navigation tape, 9-track, 1600 bpi, ASCII. This is also available on CD-ROM.