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Summary for Field Activity Number 1975-013-FA

Alternate Leg ID: Party 77

Area of Operations: upper continental slope, Texas to Florida, Gulf of Mexico, United States, North America, North Atlantic

Dates: July 28, 1975 to December 20, 1975

Objectives: 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.

Type of Activity: Seismic profiling

Information to be derived: Morphology

Summary: 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.

USGS Project Number:

Contact: Lou Garrison ()

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
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