Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ...
<!--!introduction!--> Long-term changes in Antarctic Bottom Water (AABW) off the Wilkes Land coast, East Antarctica, were investigated using historical hydrographic surveys and data from Deep Argo floats. Since the 1980s at the latest, AABW has contracted by approximately 11–14 m yr -1 and und...
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GFZ German Research Centre for Geosciences
2023
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Online Access: | https://dx.doi.org/10.57757/iugg23-1143 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017464 |
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ftdatacite:10.57757/iugg23-1143 2023-06-11T04:07:02+02:00 Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... Kobayashi, Taiyo 2023 https://dx.doi.org/10.57757/iugg23-1143 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017464 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-1143 2023-06-01T11:56:09Z <!--!introduction!--> Long-term changes in Antarctic Bottom Water (AABW) off the Wilkes Land coast, East Antarctica, were investigated using historical hydrographic surveys and data from Deep Argo floats. Since the 1980s at the latest, AABW has contracted by approximately 11–14 m yr -1 and undergone isothermal freshening by approximately –0.6 × 10 -3 yr -1 . The contraction and freshening of AABW has accelerated in recent decades, with the former being led by the latter. The contraction of AABW was mainly derived from thinning of the denser layers of AABW, which was compensated for by thickening of the upper AABW. This contrast between excessive thinning and compensative thickening has strengthened gradually over time, suggesting that the meridional overturning circulation driven by AABW formation has weakened in the Australian-Antarctic Basin. Dissolved oxygen in AABW appears to have remained constant for approximately 50 years, except for the possibility of some oxygenation after 2000, which was not ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Antarc* Antarctic Antarctica East Antarctica Wilkes Land DataCite Metadata Store (German National Library of Science and Technology) Antarctic Australian Antarctic Basin ENVELOPE(120.000,120.000,-60.000,-60.000) Australian-Antarctic Basin ENVELOPE(134.115,134.115,-58.800,-58.800) East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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description |
<!--!introduction!--> Long-term changes in Antarctic Bottom Water (AABW) off the Wilkes Land coast, East Antarctica, were investigated using historical hydrographic surveys and data from Deep Argo floats. Since the 1980s at the latest, AABW has contracted by approximately 11–14 m yr -1 and undergone isothermal freshening by approximately –0.6 × 10 -3 yr -1 . The contraction and freshening of AABW has accelerated in recent decades, with the former being led by the latter. The contraction of AABW was mainly derived from thinning of the denser layers of AABW, which was compensated for by thickening of the upper AABW. This contrast between excessive thinning and compensative thickening has strengthened gradually over time, suggesting that the meridional overturning circulation driven by AABW formation has weakened in the Australian-Antarctic Basin. Dissolved oxygen in AABW appears to have remained constant for approximately 50 years, except for the possibility of some oxygenation after 2000, which was not ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Kobayashi, Taiyo |
spellingShingle |
Kobayashi, Taiyo Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
author_facet |
Kobayashi, Taiyo |
author_sort |
Kobayashi, Taiyo |
title |
Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
title_short |
Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
title_full |
Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
title_fullStr |
Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
title_full_unstemmed |
Changes in antarctic bottom water off the Wilkes land coast in the Australian-antarctic basin ... |
title_sort |
changes in antarctic bottom water off the wilkes land coast in the australian-antarctic basin ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-1143 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017464 |
long_lat |
ENVELOPE(120.000,120.000,-60.000,-60.000) ENVELOPE(134.115,134.115,-58.800,-58.800) ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic Australian Antarctic Basin Australian-Antarctic Basin East Antarctica Wilkes Land |
geographic_facet |
Antarctic Australian Antarctic Basin Australian-Antarctic Basin East Antarctica Wilkes Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Wilkes Land |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-1143 |
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1768379524163043328 |