Summary Information for Field Activity 1979-020-FA

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

Chief scientist: Pete Popenoe

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;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.

Contact: Janet Burke ()

InfoBank: uses the identifier G-6-79-SE. Visit this site for more information.

Related Links:

- Download 79020.kml to view this field activity in Google Earth

Platform Info:

GILLISS, JAMES M

Publications resulting from these data

Popenoe, Peter,1983, High-resolution seismic reflection profiles collected August 4 to 28, 1979, between Cape Hatteras and Cape Fear, North Carolina, and off Georgia and northern Florida (Cruise GS-7903-6): U.S. Geological Survey Open-File Report 83-512, 3 p.. (Available as a PDF version). (Also available at http://pubs.er.usgs.gov/usgspubs/ofr/ofr83512)

Popenoe, Peter, and Spalding, J.S.,1988, Isopach and structure contour maps of the Miocene and post-Miocene sediments in the southeast Georgia Embayment, Florida-Hatteras Shelf, offshore Georgia: U.S. Geological Survey Open-File Report 88-397, 12 p.. (Also available at http://pubs.er.usgs.gov/djvu/OFR/1988/ofr_88_397.djvu)

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Data Types and Locations:

Geophysics

geophysical data

Navigation

Zip archive of navigation data

Logs

Chief Scientist's cruise report of personnel, equipment, data acquisition notes, and track chart.

Seismics

SEGY data files