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DOI | 10.1029/2019GL082999 |
Along-Slope Variability of Cross-Slope Eddy Transport in East Antarctica | |
Foppert, Annie1,2; Rintoul, Stephen R.1,2,3; England, Matthew H.4,5 | |
2019-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:14页码:8224-8233 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Circumpolar Deep Water (CDW) transport across the Antarctic continental slope regulates the delivery of heat to the shelf and its availability to melt floating ice shelves. The cross-slope density field, calculated from profiles collected by conductivity-temperature-depth-tagged marine mammals on the East Antarctic slope (0-160 degrees E, above 1,000- to 3,000-m isobaths), indicates eddy-driven overturning: onshore transport of CDW and offshore transport of shallower Antarctic Surface Water. Enhanced eddy activity, determined by a spice standard deviation threshold in the CDW layer, is present over about a third of the East Antarctic slope analyzed. Significantly stronger CDW transport in regions of elevated spice variability produces subsurface temperature anomalies of 0.2-0.25 degrees C relative to the East Antarctic average. Estimating eddy diffusivity from the hydrography yields about 0.8 m(2)/s of warm CDW transport to the shelf break in high-variability regions. Variability of eddy-induced CDW transport influences the reservoir of heat available for transport across the shelf break. |
英文关键词 | eddies cross-slope exchange overturning circulation Antarctic processes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481818900040 |
WOS关键词 | WATER MASSES ; CONTINENTAL-SHELF ; CIRCULATION ; TEMPERATURE ; SALINITY |
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/185303 |
专题 | 气候变化 |
作者单位 | 1.Ctr Southern Hemisphere Oceans Res, Hobart, Tas, Australia; 2.CSIRO Oceans & Atmosphere, Hobart, Tas, Australia; 3.Antarctic Climate & Ecosyst Cooperat Search Ctr, Hobart, Tas, Australia; 4.Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; 5.Univ New South Wales, ARC Ctr Excellence Climate Extremes, Sydney, NSW, Australia |
推荐引用方式 GB/T 7714 | Foppert, Annie,Rintoul, Stephen R.,England, Matthew H.. Along-Slope Variability of Cross-Slope Eddy Transport in East Antarctica[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(14):8224-8233. |
APA | Foppert, Annie,Rintoul, Stephen R.,&England, Matthew H..(2019).Along-Slope Variability of Cross-Slope Eddy Transport in East Antarctica.GEOPHYSICAL RESEARCH LETTERS,46(14),8224-8233. |
MLA | Foppert, Annie,et al."Along-Slope Variability of Cross-Slope Eddy Transport in East Antarctica".GEOPHYSICAL RESEARCH LETTERS 46.14(2019):8224-8233. |
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