Arctic Marine Acoustics and Oceanography.
Final technical rept. Apr 75-Mar 79.
LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY
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A research camp was maintained continuously on Fletchers 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.
- Physical and Dynamic Oceanography
- Snow, Ice and Permafrost