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:

1985-09-01

Pagination or Media Count:

13.0

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 37-12 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.

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