Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica
Abstract Ice mass loss in the Wilkes Land sector of East Antarctica and the Amundsen and Bellingshausen Sea sectors of West Antarctica has contributed to a rise in sea levels over several decades. The massive continental ice behind the Totten Ice Shelf, equivalent to a few meters of sea-level rise,...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s43247-021-00217-4 https://www.nature.com/articles/s43247-021-00217-4.pdf https://www.nature.com/articles/s43247-021-00217-4 |
id |
crspringernat:10.1038/s43247-021-00217-4 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s43247-021-00217-4 2023-05-15T14:07:17+02:00 Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica Hirano, Daisuke Mizobata, Kohei Sasaki, Hiroko Murase, Hiroto Tamura, Takeshi Aoki, Shigeru 2021 http://dx.doi.org/10.1038/s43247-021-00217-4 https://www.nature.com/articles/s43247-021-00217-4.pdf https://www.nature.com/articles/s43247-021-00217-4 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 General Earth and Planetary Sciences General Environmental Science journal-article 2021 crspringernat https://doi.org/10.1038/s43247-021-00217-4 2022-01-04T10:09:47Z Abstract Ice mass loss in the Wilkes Land sector of East Antarctica and the Amundsen and Bellingshausen Sea sectors of West Antarctica has contributed to a rise in sea levels over several decades. The massive continental ice behind the Totten Ice Shelf, equivalent to a few meters of sea-level rise, is grounded well below sea level and therefore, potentially vulnerable to oceanic heat. Here, we present analyses of comprehensive hydrographic observations at the continental slope and shelf break regions off Totten Ice Shelf. We provide robust evidence that the relatively warm Circumpolar Deep Water that originates at intermediate depths in the Antarctic Circumpolar Current is transported efficiently towards the shelf break by multiple cyclonic eddies. We propose that these semi-permanent cyclonic circulations play a critical role in transporting the available ocean heat towards Totten Ice Shelf, and melting it from underneath, thus eventually influencing the global climate. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Ice Shelf Totten Ice Shelf West Antarctica Wilkes Land Springer Nature (via Crossref) Antarctic The Antarctic East Antarctica West Antarctica Bellingshausen Sea Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Communications Earth & Environment 2 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science Hirano, Daisuke Mizobata, Kohei Sasaki, Hiroko Murase, Hiroto Tamura, Takeshi Aoki, Shigeru Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
Abstract Ice mass loss in the Wilkes Land sector of East Antarctica and the Amundsen and Bellingshausen Sea sectors of West Antarctica has contributed to a rise in sea levels over several decades. The massive continental ice behind the Totten Ice Shelf, equivalent to a few meters of sea-level rise, is grounded well below sea level and therefore, potentially vulnerable to oceanic heat. Here, we present analyses of comprehensive hydrographic observations at the continental slope and shelf break regions off Totten Ice Shelf. We provide robust evidence that the relatively warm Circumpolar Deep Water that originates at intermediate depths in the Antarctic Circumpolar Current is transported efficiently towards the shelf break by multiple cyclonic eddies. We propose that these semi-permanent cyclonic circulations play a critical role in transporting the available ocean heat towards Totten Ice Shelf, and melting it from underneath, thus eventually influencing the global climate. |
format |
Article in Journal/Newspaper |
author |
Hirano, Daisuke Mizobata, Kohei Sasaki, Hiroko Murase, Hiroto Tamura, Takeshi Aoki, Shigeru |
author_facet |
Hirano, Daisuke Mizobata, Kohei Sasaki, Hiroko Murase, Hiroto Tamura, Takeshi Aoki, Shigeru |
author_sort |
Hirano, Daisuke |
title |
Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
title_short |
Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
title_full |
Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
title_fullStr |
Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
title_full_unstemmed |
Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica |
title_sort |
poleward eddy-induced warm water transport across a shelf break off totten ice shelf, east antarctica |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s43247-021-00217-4 https://www.nature.com/articles/s43247-021-00217-4.pdf https://www.nature.com/articles/s43247-021-00217-4 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic The Antarctic East Antarctica West Antarctica Bellingshausen Sea Wilkes Land |
geographic_facet |
Antarctic The Antarctic East Antarctica West Antarctica Bellingshausen Sea Wilkes Land |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Ice Shelf Totten Ice Shelf West Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea East Antarctica Ice Shelf Totten Ice Shelf West Antarctica Wilkes Land |
op_source |
Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-021-00217-4 |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
_version_ |
1766279188354957312 |