Eos, Transactions American Geophysical Union

USGS gathering offshore data for OCS


  • Anonymous


During the 1977 fiscal year the U.S. Geological Survey acquired offshore geophysical and geological data from nearly 160,000 km of tracking in the Atlantic, the Pacific, offshore Alaska, and the Gulf of Mexico in direct support of the outer continental shelf (OCS) oil and gas resource evaluation program.

Geophysical data, which include common depth point and high-resolution seismic data, some gravity and magnetic data, and geologic data, are acquired by the USGS for use in selecting and evaluating promising tracts to be offered by the Bureau of Land Management for lease and in identifying geologic features which could be hazardous to subsequent drilling or production operations. Such data are obtained by surveys made from ships that follow a predetermined criss-cross pattern and tow special signal-generating and recording equipment.