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Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica

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Title: Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica
Authors: Hirano, Daisuke Browse this author
Mizobata, Kohei Browse this author
Sasaki, Hiroko Browse this author
Murase, Hiroto Browse this author
Tamura, Takeshi Browse this author
Aoki, Shigeru Browse this author →KAKEN DB
Issue Date: 6-Aug-2021
Publisher: Springer Nature
Journal Title: Communications Earth & Environment
Volume: 2
Issue: 1
Start Page: 153
Publisher DOI: 10.1038/s43247-021-00217-4
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. Circumpolar Deep Water is efficiently transported towards the shelf break off Totten Ice Shelf, East Antarctica by cyclonic eddies, suggest comprehensive hydrographic observations.
Type: article
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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