气候变化领域集成服务门户(CCPortal): Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea

CCPortal

DOI	10.1029/2019JC015710
	Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea
	Akhoudas C.; Sallée J.-B.; Reverdin G.; Aloisi G.; Benetti M.; Vignes L.; Gelado M.
发表日期	2020
ISSN	21699275
卷号	125 期号:2
英文摘要	We use new observations of stable water isotopes from a research cruise in early 2017 to highlight ocean-ice interactions occurring under Filchner-Ronne Ice Shelf, the largest Antarctic ice shelf. In particular, we investigate the properties of Ice Shelf Water with temperature lower than the surface freezing point, in the Filchner Depression. We identify two main flavors of Ice Shelf Water emerging from beneath the Filchner Ice Shelf, which originate from High Salinity Shelf Water end members with distinct characteristics. Furthermore, these two High Salinity Shelf Water end members interact with areas of the ice shelves with different basal properties to produce different versions of Ice Shelf Water. These water masses are associated with different rates of basal melting and refreezing, which we quantify. Ice Shelf Water types that flow out of the ice shelf cavity are composed of 0.4% of mass from ice shelf (melt minus freeze) when sampled at the front of Filchner Ice Shelf. The slightly lighter Ice Shelf Water version mixes directly with ambient water masses as it flows northward on the continental shelf. The resulting Ice Shelf Water mixture with temperature below the surface freezing point ultimately sinks along the continental slope into the deep ocean, as a precursor of the Weddell Sea bottom waters. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186979
作者单位	Sorbonne Université, CNRS/IRD/MNHN (LOCEAN UMR 7159), Paris, France; Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Univ Paris Diderot, UMR 7154 CNRS, Paris, France; Institute of Earth Sciences, University of Iceland, Reykjavik, Iceland; Chemistry Department, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
推荐引用方式 GB/T 7714	Akhoudas C.,Sallée J.-B.,Reverdin G.,et al. Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea[J],2020,125(2).
APA	Akhoudas C..,Sallée J.-B..,Reverdin G..,Aloisi G..,Benetti M..,...&Gelado M..(2020).Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea.Journal of Geophysical Research: Oceans,125(2).
MLA	Akhoudas C.,et al."Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea".Journal of Geophysical Research: Oceans 125.2(2020).