Accession Number : ADA018763

Title :   Marginal Sea Ice Zone Oceanographic Measurements, Bering and Chukchi Seas, 1973 and 1974,


Personal Author(s) : Garrison,G. R. ; Becker,P.

Report Date : 22 SEP 1975

Pagination or Media Count : 161

Abstract : Oceanographic surveys were conducted in the Bering Sea, the Bering Strait and the Chukchi Sea to study the summer intrusion of warm water into the Chukchi Sea. The northward movement of warmed Bering Sea water starts early in July and enters the Chukchi Sea in two areas: A narrow current along the coast which normally proceeds past Barrow, and a broad flow northward which passes to the east of Wrangel Island and gradually spreads into a thick surface layer across the Chukchi Sea. The zone of contact between intrusion and existing arctic water contains the thermal microstructure that is such a problem to the acoustician. The intrusion appears to stop in September as the surface-cooled waters begin to spread southward. Thermal microstructure also appears near Barrow in the spring as the deeper Atlantic water rises and partially mixes with the colder arctic water.

Descriptors :   *Sea ice, *Chukchi Sea, *Bering Sea, Thermal properties, Microstructure, Straits, Ocean currents, Fluid flow, Heating, Sea water, Oceanographic data, Surveys, Intrusion, Arctic regions, Underwater sound, Alaska

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE