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Summary for Field Activity Number 1979-020-FA

Alternate Leg ID: GS 7903-6

Area of Operations: Cape Hatteras, Cape Romain, North Carolina, Continental Shelf, Slope, Rise, Georgia Continental Shelf, Crescent Beach, Cape Canaveral, Florida Continental Shelf, Red Snapper Sink, United States, North America, North Atlantic

Dates: August 10, 1979 to August 29, 1979

Objectives: Cape Hatteras area: High-resolution seismic profiling of the continental shelf, slope and rise for a regional assessment of environmental hazards to petroleum exploration and development. Nature and frequency of slumping, faulting, cut and fill, scour, sand waves, and karst topography were examined. Two lines were run to define a growth fault seen on deep CDP data in area. Offshore Georgia Continental Shelf: Survey conducted to assess possible pipeline corridor routes on the Georgia shelf. High-resolution seismic reflection data were used to assess Pleistocene river channels, scour, sand waves, cut and fill, faulting, shallow gas, and reefs and hardground development. Red Snapper Sink: Detailed high-resolution seismic lines were put across and near the sink to assess the seismic nature of the karst development in the area. Florida Shelf: A high-resolution seismic reflection profile was run between Red Snapper Sink and Cape Canaveral to trace the subsurface expression of the karst surface.

Type of Activity: Seismic profiling
Geophysical survey

Information to be derived: Morphology

Summary: Airgun (1, 5, 20, and 40 cu. in. were used based on water depth and ringing problems): 3290 km; 3.5 kHz: 3290 km; Uniboom: 1352 km; Gravity: 4940 km; Magnetics: 1935 km.

USGS Project Number: EA

Contact: Pete Popenoe (ppopenoe@usgs.gov)

Map for Area of Operations :

Map of field activity boundary.

Platform Info:
photo of GILLISS, JAMES  M
GILLISS, JAMES M
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