Arctic Marine Acoustics and Oceanography.

• Other Authors: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY
• Format: Text
• Language: English
• Published: 1979
• Subjects: Physical and Dynamic Oceanography; Snow; Ice and Permafrost; *Arctic regions; Ice islands; Geophysics; Measurement; Drift; Stations; Arctic; Arctic Ocean; Beaufort Sea; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/ADA114186; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA114186

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.