Other ID: Party 77
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): Louis E. Garrison
Affiliate Investigator(s): Western Geophysical Company of America
Data Type(s): Location-Elevation: Navigation, Seismics: Sparker, Seismics: Sub Bottom Profiler
Scientific Purpose/Goals: Contractor Western Geophysical Company of America will conduct a high-resolution geophysical survey on the upper continental slope in the Gulf of Mexico, north of latitude 26 N, in water depths between 100 m and 1,000 m with seismic lines spaced from 7.5 to 18.5 km apart in a reconnaissance grid pattern.
Start Port/Location: Port Mansfield, TX
Start Date: 1975-07-28
End Date: 1975-12-20
Equipment Used: 3.5 kHz, Sparker system, Single channel hydrophone, Loran-C
Information to be Derived:
Summary of Activity and Data Gathered: The released data consist of single-channel geophysical records from a 3.5 kHz sub-bottom profiler and a 1,000 joule sparker operated simultaneously throughout 18,074 km of ship's track: Lines 1A, 2 thru 214, 20A, 22A, 26A, 30A, and 69A. Data quality for all records at all water depths was good to excellent. Other data collected includes bathymetry and magnetics.
Survey contracted to Western Geophysical Company of America.
Notes: Navigation was by Offshore Navigation, Inc.
upper continental slope, Texas to Florida, Gulf of Mexico, United States, North America, North Atlantic;
|North: 31.5||South: 25.75||West: -96.25||East: -84.5|
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|3.5 kHz||---||Sub Bottom Profiler|
|Single channel hydrophone||---||Air Gun / Water Gun|
Sub Bottom Profiler
|1975-013-FA-SE-001 ( microfilm of )|