A Deep Hydrographic Section Across the Tasman Sea.
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1985
- Accession Number
- ADA167638
Entities
People
- P. J. Mulhearn