Abstract

A large scale seismic crustal structure experiment was conducted off the east coast of the United States during the summer of 1965. Seismic waves were recorded from two large shot profiles with nearly orthogonal components. Underwater shot sizes varied from 20 lb to 10 tons and were fired on the ocean bottom if the water depth was less than 600 ft. In deep water, the shots greater than 1 ton were floated at approximately 300 ft before they were fired. This paper discusses some of the difficulties in determining accurate shot positions and reviews the organizations participating in the experiment.

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