論文

査読有り
2021年8月16日

Antarctic Slope Current modulates ocean heat intrusions towards Totten Glacier

Geophysical Research Letters
  • Yoshihiro Nakayama
  • Chad A. Greene
  • Fernando S. Paolo
  • Vigan Mensah
  • Hong Zhang
  • Haruhiko Kashiwase
  • Daisuke Simizu
  • Jamin S. Greenbaum
  • Donald D. Blankenship
  • Ayako Abe‐Ouchi
  • Shigeru Aoki
  • 全て表示

48
17
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1029/2021gl094149
出版者・発行元
American Geophysical Union (AGU)

The Totten ice shelf (TIS) in East Antarctica has received increasing attention in recent years due to high basal melt rates, which have been linked to a presence of warm modified Circumpolar Deep Water (mCDW) observed at the ice front. We show that mCDW on-shelf intrusions towards the TIS strengthen when the Antarctic Slope Current (ASC) weakens. This demonstrates that the ASC has a blocking effect and ASC weakening leads to on-shelf intrusions, as proposed by previous observational studies. The interannual variability of the ASC is controlled primarily by atmospheric and oceanic conditions beyond our regional model domain. We further show that heat intrusions onto the continental shelf off the TIS are not influenced by off-shelf warming but are enhanced with coastal freshening, suggesting positive feedback whereby ice melt and freshening upstream could start a chain reaction, leading to increased melt, and further coastal freshening.

リンク情報
DOI
https://doi.org/10.1029/2021gl094149
URL
https://onlinelibrary.wiley.com/doi/pdf/10.1029/2021GL094149
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114714063&origin=inward 本文へのリンクあり
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85114714063&origin=inward
ID情報
  • DOI : 10.1029/2021gl094149
  • ISSN : 0094-8276
  • eISSN : 1944-8007
  • SCOPUS ID : 85114714063

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