Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica
Cold and dense ice shelf water (ISW) emerging from the Filchner-Ronne Ice Shelf cavity in the southwestern Weddell Sea flows northward through the Filchner Depression to eventually descend the con- tinental slope and contribute to the formation of bottom water. New ship-born observations of hydrogra...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://hdl.handle.net/1956/13057 https://doi.org/10.1002/2014jc010225 |
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ftunivbergen:oai:bora.uib.no:1956/13057 2023-05-15T13:49:15+02:00 Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica Darelius, Elin Maria K. Makinson, Keith Daae, Kjersti Birkeland Fer, Ilker Holland, Paul R. Nicholls, Keith W. 2016-10-24T08:15:18Z application/pdf https://hdl.handle.net/1956/13057 https://doi.org/10.1002/2014jc010225 eng eng Wiley American Geophysical Union (AGU) urn:issn:2169-9291 https://hdl.handle.net/1956/13057 https://doi.org/10.1002/2014jc010225 cristin:1149295 Copyright 2014 American Geophysical Union. All Rights Reserved. VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Peer reviewed Journal article 2016 ftunivbergen https://doi.org/10.1002/2014jc010225 2023-03-14T17:40:05Z Cold and dense ice shelf water (ISW) emerging from the Filchner-Ronne Ice Shelf cavity in the southwestern Weddell Sea flows northward through the Filchner Depression to eventually descend the con- tinental slope and contribute to the formation of bottom water. New ship-born observations of hydrogra- phy and currents from Filchner Depression in January 2013 suggest that the northward flow of ISW takes place in a middepth jet along the eastern flank of the depression, thus questioning the traditional view with outflow along the western flank. This interpretation of the data is supported by results from a regional numerical model, which shows that ISW flowing northward along the eastern coast of Berkner Island turns eastward and crosses the depression to its eastern side upon reaching the Filchner ice front. The ice front represents a sudden change in the thickness of the water column and thus a potential vorticity barrier. Transport estimates of northward ISW flux based on observations ranges from 0.2 to 1.0 Sv. publishedVersion Article in Journal/Newspaper Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea University of Bergen: Bergen Open Research Archive (BORA-UiB) Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Filchner Ice Front ENVELOPE(-40.000,-40.000,-77.500,-77.500) Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Weddell Weddell Sea Journal of Geophysical Research: Oceans 119 9 5797 5814 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Darelius, Elin Maria K. Makinson, Keith Daae, Kjersti Birkeland Fer, Ilker Holland, Paul R. Nicholls, Keith W. Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
description |
Cold and dense ice shelf water (ISW) emerging from the Filchner-Ronne Ice Shelf cavity in the southwestern Weddell Sea flows northward through the Filchner Depression to eventually descend the con- tinental slope and contribute to the formation of bottom water. New ship-born observations of hydrogra- phy and currents from Filchner Depression in January 2013 suggest that the northward flow of ISW takes place in a middepth jet along the eastern flank of the depression, thus questioning the traditional view with outflow along the western flank. This interpretation of the data is supported by results from a regional numerical model, which shows that ISW flowing northward along the eastern coast of Berkner Island turns eastward and crosses the depression to its eastern side upon reaching the Filchner ice front. The ice front represents a sudden change in the thickness of the water column and thus a potential vorticity barrier. Transport estimates of northward ISW flux based on observations ranges from 0.2 to 1.0 Sv. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Darelius, Elin Maria K. Makinson, Keith Daae, Kjersti Birkeland Fer, Ilker Holland, Paul R. Nicholls, Keith W. |
author_facet |
Darelius, Elin Maria K. Makinson, Keith Daae, Kjersti Birkeland Fer, Ilker Holland, Paul R. Nicholls, Keith W. |
author_sort |
Darelius, Elin Maria K. |
title |
Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
title_short |
Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
title_full |
Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
title_fullStr |
Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
title_full_unstemmed |
Hydrography and circulation in the Filchner Depression, Weddell Sea, Antarctica |
title_sort |
hydrography and circulation in the filchner depression, weddell sea, antarctica |
publisher |
Wiley |
publishDate |
2016 |
url |
https://hdl.handle.net/1956/13057 https://doi.org/10.1002/2014jc010225 |
long_lat |
ENVELOPE(-48.117,-48.117,-79.333,-79.333) ENVELOPE(-40.000,-40.000,-77.500,-77.500) ENVELOPE(-61.000,-61.000,-78.500,-78.500) |
geographic |
Berkner Island Filchner Ice Front Ronne Ice Shelf Weddell Weddell Sea |
geographic_facet |
Berkner Island Filchner Ice Front Ronne Ice Shelf Weddell Weddell Sea |
genre |
Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctica Berkner Island Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
op_relation |
urn:issn:2169-9291 https://hdl.handle.net/1956/13057 https://doi.org/10.1002/2014jc010225 cristin:1149295 |
op_rights |
Copyright 2014 American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1002/2014jc010225 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
9 |
container_start_page |
5797 |
op_container_end_page |
5814 |
_version_ |
1766251050371645440 |