Item talk:Q107343

Marine seismic sonobuoy data from the Bering Sea region

Throughout the field seasons of 1975 to 1978, the Geological Survey carried out an extensive program of seismic sonobuoy research aboard the R/V S.P. LEE over the entire Bering Sea region. 75 successful sonobuoy refraction and wide angle reflection stations were recorded over the shelf areas of Navarin Basin, St. George Basin and Umnak Plateau, and the deep ocean areas of Bowers Basin and the Aleutian Basin. Of these, 18 were in shallow water depths (less than 200 meters), 21 were in intermediate depths (200 to 3000 meters) and 36 were in deep water (greater than 3000 meters). The shortest of the sonobuoy lines is 3 nautical miles (5.6 km) while the longest is almost 42 n.m. (78 km). The average distance 1s 17 n.m. (21 km). These unreversed sonobuoy lines were all recorded with a tuned air gun array and were all shot along single channel, and often multichannel, seismic lines.