PURPOSE: A. Collect geological information on types and sources of sediment deposited on the inshore continental shelf off Oregon in connection with the exploration for heavy metals. B. Obtain sparker and airgun sub-bottom profiles in selected areas. C. Obtain grab samples from selected stations. D. Collect bathymetric data in areas of interest.
Description
United States Geological Survey, Menlo Park, California. Chief Scientist: Gene Rusnak. Geological and Geophysical data (sparker, magnetics, bathymetry, radar) of field activity P-1-66-WO in Inshore Continental Shelf Off Oregon from 08/22/1966 to 09/28/1966
Location
Inshore Continental Shelf Off Oregon
Summary
physical data holdings
Summary Sparker tracks were run using two electrode cages, arcing in unison, and separated by a distance of 30 feet. Small depressers attached to the cages were, in the course of the cruise, added to keep the electrodes in the water (approximately 15 feet) at higher speeds (up to 10k). The sparker tracks were conducted at varying speeds throughout the cruise depending on the nature of the bottom and the performance of equipment. A total of 92 samples were obtained with a shipek grab sampler in the course of this cruise. Bathymetric records were made concurrent with all sparker tracks. The magnetometer proved unreliable on all tests and its use was subsequently discontinued. Position fixes were obtained primarily with the Decca, Model TM629, radar. About 1800 nautical miles were covered in the course of the cruise.
Info derived
Seismic reflection profiles, bathymetry.
Comments
Staff information imported from InfoBank
Gene Rusnak (USGS Western Region) - Chief Scientist
Jerry Joslin (Polaris) - Captain
R. Stacey (Polaris) - Captain
E. Magalhaes (Polaris) - Engineer
B. Ladd (Polaris) - Electronic Technician
C. Winegard (USGS Western Region) - Geologist
P. Lyons (Polaris) - Electonic Technician
W. Black (Polaris) - Crew
W. Glen (Polaris) - Cook
Platform
Polaris I
Itinerary
Start
Redwood City, CA and Ft. Bragg, CA and Newport, OR and Newport, OR and Astoria, OR and Newport, OR and Coos Bay, OR and Charleston, OR and Charleston, OR and Charleston, OR and Charleston, OR and Port Orford, OR
1966-08-22
End
Ft. Bragg, CA and Newport, OR and Newport, OR and Astoria, OR and Newport, OR and Coos Bay, OR and Charleston, OR and Charleston, OR and Charleston, OR and Charleston, OR and Port Orford, OR and Redwood City, CA
