Accession Number : ADA167638
Title : A Deep Hydrographic Section Across the Tasman Sea.
Descriptive Note : Technical memo.,
Corporate Author : ROYAL AUSTRALIAN NAVY RESEARCH LAB EDGECLIFF
Personal Author(s) : Mulhearn,P J
Report Date : Sep 1985
Pagination or Media Count : 13
Abstract : This memorandum reports on the results obtained from a deep hydrographic section across the Tasman Sea in December 1983. Data were obtained on temperature, salinity and oxygen concentration. Cross-sections of these variables and of potential temperature, density and geostrophic current are presented. A small cold region, suggestive of a boundary current, was found at the foot of the NSW Continental Slope, near 36 deg S, as well as a relatively cold water mass near 37-1/2 deg S, 155-1/2 deg E over the now dormat, mid-Tasman spreading ridge. The latter water mass is probably associated with a north-westwards flow of water derived from Antarctic bottom water. Deep geostrophic currents relative to 2,000 n were weak and of order 3 cm/sec northwards near 37-1/2 deg S, 155 deg E, and 2.5 cm/sec southwards over the abyssal plain near 36-1/2 deg S, 152-1/2 deg E. Keywords: Sea water; Water masses; Ocean currents; Descriptive oceanography.
Descriptors : *TASMAN SEA , TEMPERATURE , OCEAN CURRENTS , WATER , MASS , CONTINENTAL SLOPES , CROSS SECTIONS , CONCENTRATION(COMPOSITION) , SALINITY , AUSTRALIA , SEA WATER , GEOSTROPHIC CURRENTS , WATER MASSES , BOTTOM , SOUTH PACIFIC OCEAN
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE