Multichannel Seismic-Reflection Profiles Eastern Gulf of Alaska USGS Open File Report 84-6

Approximately 2,492 km of 24-channel seismic-reflection profiles are now available for the Eastern Gulf of Alaska. The profiles were collected by the U.S. Geological Survey (USGS) on the USGS Research Vessel S.P. LEE during the summer of 1977 (USGS Open File Report 84-6).* A sound source of five airguns was used with a volume of 1,326 cu. in. of air compressed to approximately 1,950 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 a group interval of 100 m. A 2-msec sampling rate was used in the field. The data were later desampled to 4 msec during the demultiplexing process. Navigational control for the survey was obtained with a Marconi integrated satellite-Doppler sonar navigation system. Deposited content: descriptive metadata only; underlying research data are not included.