Gravity data were acquired at 1,175 stations during the period April 13 to May 3, 1982 by EDCON, Inc. using a helicopter-borne inertial surveying system and LaCoste and Romberg G-meters. Of the total number of stations, 1,156 were acquired along one of 19 lines and the remaining 19 stations were control points or gravity bases. The survey is located in southwestern Alaska approximately 325 kilometers west of Anchorage, Alaska. Stations acquired along the 19 lines. In general, gravity stations were spaced approximately 1,600 meters apart along northwest-southeast oriented lines which were spaced 9,500 meters apart.
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