A Deep Hydrographic Section Across the Tasman Sea.
ROYAL AUSTRALIAN NAVY RESEARCH LAB EDGECLIFF
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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 37-12 deg S, 155-12 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 cmsec northwards near 37-12 deg S, 155 deg E, and 2.5 cmsec southwards over the abyssal plain near 36-12 deg S, 152-12 deg E. Keywords Sea water Water masses Ocean currents Descriptive oceanography.
- Physical and Dynamic Oceanography