On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current
The Antarctic Slope Current is guided by the topographic gradient of the continental slope and acts as a dynamical barrier between the continental shelf and the open ocean. Exchanges of water masses across the shelf break are important for future predictions of the Antarctic ice shelves and the vent...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5018603 2023-07-02T03:30:43+02:00 On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current Huneke, W. Morrison, A. Hogg, A. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018603 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2191 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018603 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-2191 2023-06-11T23:39:57Z The Antarctic Slope Current is guided by the topographic gradient of the continental slope and acts as a dynamical barrier between the continental shelf and the open ocean. Exchanges of water masses across the shelf break are important for future predictions of the Antarctic ice shelves and the ventilation of the deep ocean. The Antarctic Slope Current is surface-intensified in many regions but bottom-intensified in regions of dense overflows. This study investigates the role of dense overflows in contributing to the dynamics of the bottom-intensified flow using a 0.1° global ocean-sea ice model. The occurrence of the bottom-intensification is tightly linked to dense overflows and bottom speeds correlate with dense overflows on interannual time scales. A lack of vertical connectivity between the bottom and surface flow, however, suggests that the along-slope bottom water flows are coincidentally co-located with the Antarctic Slope Current, rather than dynamically a part of the current. Conference Object Antarc* Antarctic Ice Shelves Sea ice GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic The Antarctic |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
The Antarctic Slope Current is guided by the topographic gradient of the continental slope and acts as a dynamical barrier between the continental shelf and the open ocean. Exchanges of water masses across the shelf break are important for future predictions of the Antarctic ice shelves and the ventilation of the deep ocean. The Antarctic Slope Current is surface-intensified in many regions but bottom-intensified in regions of dense overflows. This study investigates the role of dense overflows in contributing to the dynamics of the bottom-intensified flow using a 0.1° global ocean-sea ice model. The occurrence of the bottom-intensification is tightly linked to dense overflows and bottom speeds correlate with dense overflows on interannual time scales. A lack of vertical connectivity between the bottom and surface flow, however, suggests that the along-slope bottom water flows are coincidentally co-located with the Antarctic Slope Current, rather than dynamically a part of the current. |
format |
Conference Object |
author |
Huneke, W. Morrison, A. Hogg, A. |
spellingShingle |
Huneke, W. Morrison, A. Hogg, A. On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
author_facet |
Huneke, W. Morrison, A. Hogg, A. |
author_sort |
Huneke, W. |
title |
On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
title_short |
On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
title_full |
On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
title_fullStr |
On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
title_full_unstemmed |
On the role of Dense Shelf Water overflows in the dynamics of the Antarctic Slope Current |
title_sort |
on the role of dense shelf water overflows in the dynamics of the antarctic slope current |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018603 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Shelves Sea ice |
genre_facet |
Antarc* Antarctic Ice Shelves Sea ice |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-2191 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018603 |
op_doi |
https://doi.org/10.57757/IUGG23-2191 |
_version_ |
1770275008692617216 |