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Deep sections through the South Australian Basin and across the Australian‐Antarctic Discordance
Author(s) -
Schodlok Michael P.,
Tomczak Matthias,
White Neil
Publication year - 1997
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl01929
Subject(s) - hydrography , oceanography , circumpolar deep water , antarctic bottom water , geology , water mass , deep water , subtropical front , front (military) , bottom water , subtropics , structural basin , antarctic intermediate water , mode water , hydrographic survey , climatology , north atlantic deep water , paleontology , ocean gyre , fishery , biology
Fronts and water masses in the Australian Basin are described, based on three sections made by R/V Franklin during 1994 as part of the WOCE One‐time Hydrographic Survey. The Subtropical Front is found closer to the Australian continent than previously thought. Convection of Subantarctic Mode Water is seen to reach 700 m depth. A locally formed variety of Antarctic Intermediate Water with a temperature near 6°C is found near 120°E. Antarctic Bottom Water enters the Indian Ocean through the Discordance at 125°37′E and 127°E but not at 120°E, where the deep passage seen in the topography may be closed for Bottom Water inflow.