Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight
Hydrographic and stable isotope data from waters in the eastern Great Australian Bight (GAB) sampled during March–April 1998 indicate that both mixing and evaporative processes are important on the shelf. Five water masses are defined on the basis of their temperature, salinity, δ 2H and δ 18O value...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/8120 2024-01-14T10:10:53+01:00 Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight Richardson, Laura Kyser, Kurt James, Noel P. Bone, Yvonne 14 pages http://hdl.handle.net/1885/8120 https://doi.org/10.1029/2009JC005407 https://openresearch-repository.anu.edu.au/bitstream/1885/8120/4/Richardson_AnalysisHydrographic2009.pdf.jpg unknown American Geophysical Union 0148-0227 http://hdl.handle.net/1885/8120 doi:10.1029/2009JC005407 https://openresearch-repository.anu.edu.au/bitstream/1885/8120/4/Richardson_AnalysisHydrographic2009.pdf.jpg http://www.agu.org/pubs/authors/usage_permissions.shtml "Permission to Deposit an Article in an Institutional Repository Adopted by Council 13 December 2009 AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU."- from publisher web site (as at 5/7/11) Journal of Geophysical Research 114 (2009): C10016/1-14 http://www.agu.org/pubs/crossref/2009/2009JC005407.shtml water masses Flinders Current Southern Ocean Journal article ftanucanberra https://doi.org/10.1029/2009JC005407 2023-12-15T09:36:47Z Hydrographic and stable isotope data from waters in the eastern Great Australian Bight (GAB) sampled during March–April 1998 indicate that both mixing and evaporative processes are important on the shelf. Five water masses are defined on the basis of their temperature, salinity, δ 2H and δ 18O values. Two of these are end-members, the Flinders Current (FC) and the Great Australian Bight Plume (GABP), whereas the other three are a result of mixing between these two end-members. Water mass distribution reflects an anticyclonic gyre in the eastern GAB. Cool and fresh water present at depth along the Eyre Peninsula is sourced from upwelling of Flinders Current water directly from the shelf break. This water is progressively heated, evaporated, and mixed with warmer and more saline shelf waters as it flows around the gyre. High temperatures, salinities, and δ 2H values in surface waters in the central GAB suggest that the Great Australian Bight Plume has a greater spatial extent than previously recorded, also occurring along the shelf edge between 130°E and 133°E. A high temperature, high salinity, low δ 2H water mass that is isotopically similar to the Flinders Current occurs in the west of the study area, indicating intrusion of Flinders Current water into the central GAB. Differences in isotopic compositions of off-shelf water suggest that the Great Australian Bight Plume is flowing off the shelf and mixing with Flinders Current water at ∼132°E; however, this outflow does not generate an eastward flowing current during the period when samples were collected. Article in Journal/Newspaper Southern Ocean Australian National University: ANU Digital Collections Southern Ocean Flinders ENVELOPE(-66.667,-66.667,-69.267,-69.267) Journal of Geophysical Research 114 C10 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
water masses Flinders Current Southern Ocean |
spellingShingle |
water masses Flinders Current Southern Ocean Richardson, Laura Kyser, Kurt James, Noel P. Bone, Yvonne Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
topic_facet |
water masses Flinders Current Southern Ocean |
description |
Hydrographic and stable isotope data from waters in the eastern Great Australian Bight (GAB) sampled during March–April 1998 indicate that both mixing and evaporative processes are important on the shelf. Five water masses are defined on the basis of their temperature, salinity, δ 2H and δ 18O values. Two of these are end-members, the Flinders Current (FC) and the Great Australian Bight Plume (GABP), whereas the other three are a result of mixing between these two end-members. Water mass distribution reflects an anticyclonic gyre in the eastern GAB. Cool and fresh water present at depth along the Eyre Peninsula is sourced from upwelling of Flinders Current water directly from the shelf break. This water is progressively heated, evaporated, and mixed with warmer and more saline shelf waters as it flows around the gyre. High temperatures, salinities, and δ 2H values in surface waters in the central GAB suggest that the Great Australian Bight Plume has a greater spatial extent than previously recorded, also occurring along the shelf edge between 130°E and 133°E. A high temperature, high salinity, low δ 2H water mass that is isotopically similar to the Flinders Current occurs in the west of the study area, indicating intrusion of Flinders Current water into the central GAB. Differences in isotopic compositions of off-shelf water suggest that the Great Australian Bight Plume is flowing off the shelf and mixing with Flinders Current water at ∼132°E; however, this outflow does not generate an eastward flowing current during the period when samples were collected. |
format |
Article in Journal/Newspaper |
author |
Richardson, Laura Kyser, Kurt James, Noel P. Bone, Yvonne |
author_facet |
Richardson, Laura Kyser, Kurt James, Noel P. Bone, Yvonne |
author_sort |
Richardson, Laura |
title |
Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
title_short |
Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
title_full |
Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
title_fullStr |
Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
title_full_unstemmed |
Analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern Great Australian Bight |
title_sort |
analysis of hydrographic and stable isotope data to determine water masses, circulation, and mixing in the eastern great australian bight |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/1885/8120 https://doi.org/10.1029/2009JC005407 https://openresearch-repository.anu.edu.au/bitstream/1885/8120/4/Richardson_AnalysisHydrographic2009.pdf.jpg |
long_lat |
ENVELOPE(-66.667,-66.667,-69.267,-69.267) |
geographic |
Southern Ocean Flinders |
geographic_facet |
Southern Ocean Flinders |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Journal of Geophysical Research 114 (2009): C10016/1-14 http://www.agu.org/pubs/crossref/2009/2009JC005407.shtml |
op_relation |
0148-0227 http://hdl.handle.net/1885/8120 doi:10.1029/2009JC005407 https://openresearch-repository.anu.edu.au/bitstream/1885/8120/4/Richardson_AnalysisHydrographic2009.pdf.jpg |
op_rights |
http://www.agu.org/pubs/authors/usage_permissions.shtml "Permission to Deposit an Article in an Institutional Repository Adopted by Council 13 December 2009 AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU."- from publisher web site (as at 5/7/11) |
op_doi |
https://doi.org/10.1029/2009JC005407 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
C10 |
_version_ |
1788065735838269440 |