Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074433 |
Bathymetric control of warm ocean water access along the East Antarctic Margin | |
Nitsche, F. O.1; Porter, D.1; Williams, G.2,3; Cougnon, E. A.2,3; Fraser, A. D.3,4; Correia, R.5; Guerrero, R.6 | |
2017-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Australia; Japan; Portugal; Argentina |
英文摘要 | Observed thinning of the Totten Glacier in East Antarctica has cast doubt upon the stability of the East Antarctic Ice Sheet. Recent oceanographic observations at the front of the Totten Ice Shelf have confirmed the presence of modified Circumpolar Deep Water (mCDW), which likely promotes enhanced melting. Details of how this water accesses the shelf remain uncertain. Here we present new bathymetry and autumnal oceanographic data from the outer continental shelf, north of the Totten Glacier, that show up to 0.7 degrees C mCDW in a>100km wide and >500m deep depression within the shelf break. In other parts of East Antarctica, a shelf break bathymetry shallower than 400m prevents these warmer waters from entering the shelf environment. Our observations demonstrate that detailed knowledge of the bathymetry is critical to correctly model the across-shelf exchange of warm water to the various glaciers/ice shelves of Antarctica for future sea level prediction. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411702400031 |
WOS关键词 | PINE ISLAND GLACIER ; ICE-SHEET ; AMUNDSEN SEA ; WEST ANTARCTICA ; TOTTEN GLACIER ; MASS-LOSS ; SHELF ; ALTIMETRY ; PACIFIC ; RETREAT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28072 |
专题 | 气候变化 |
作者单位 | 1.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 2.Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia; 3.Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia; 4.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan; 5.Univ Aveiro, Geosci Dept, Aveiro, Portugal; 6.Antarctic Inst Nacl Invest & Desarollo Pesquero, Mar Del Plata, Buenos Aires, Argentina |
推荐引用方式 GB/T 7714 | Nitsche, F. O.,Porter, D.,Williams, G.,et al. Bathymetric control of warm ocean water access along the East Antarctic Margin[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(17). |
APA | Nitsche, F. O..,Porter, D..,Williams, G..,Cougnon, E. A..,Fraser, A. D..,...&Guerrero, R..(2017).Bathymetric control of warm ocean water access along the East Antarctic Margin.GEOPHYSICAL RESEARCH LETTERS,44(17). |
MLA | Nitsche, F. O.,et al."Bathymetric control of warm ocean water access along the East Antarctic Margin".GEOPHYSICAL RESEARCH LETTERS 44.17(2017). |
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