Accession Number : ADA114186

Title :   Arctic Marine Acoustics and Oceanography.

Descriptive Note : Final technical rept. Apr 75-Mar 79.

Corporate Author : LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY

PDF Url : ADA114186

Report Date : Mar 1979

Pagination or Media Count : 8

Abstract : A research camp was maintained continuously on Fletcher's Ice Island (T-3) in the Arctic Ocean from May, 1962, until September, 1974. During those 12 years a scientific party from Lamont maintained a program of geophysical data collection on the ice island as it drifted with wind and currents over a 14,000 km track in the Beaufort Sea. The location of the ice island was determined by celestial navigation using a theodolite up until 1967 when a satellite navigation was installed. Ocean depth was measured with a 12 k Hz echo sounder continuously during the drift except for minor gaps due to equipment failures. Gravity was read several times each day with a LaCoste and Romberg gravimeter. The total magnetic field was measured with a proton precession magnetometer and recorded continuously except for some gaps due to instrument problems. These data constitute a valuable resource for studies of ice drift and of crustal structure in the Beaufort Sea.

Descriptors :   *Arctic regions, Ice islands, Geophysics, Measurement, Drift, Stations

Subject Categories : Physical and Dynamic Oceanography
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE