气候变化领域集成服务门户(CCPortal): Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica

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DOI	10.1038/s41467-021-23534-w
	Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica
	Minowa M.; Sugiyama S.; Ito M.; Yamane S.; Aoki S.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Basal melting of ice shelves is considered to be the principal driver of recent ice mass loss in Antarctica. Nevertheless, in-situ oceanic data covering the extensive areas of a subshelf cavity are sparse. Here we show comprehensive structures of temperature, salinity and current measured in January 2018 through four boreholes drilled at a ~3-km-long ice shelf of Langhovde Glacier in East Antarctica. The measurements were performed in 302–12 m-thick ocean cavity beneath 234–412 m-thick ice shelf. The data indicate that Modified Warm Deep Water is transported into the grounding zone beneath a stratified buoyant plume. Water at the ice-ocean interface was warmer than the in-situ freezing point by 0.65–0.95°C, leading to a mean basal melt rate estimate of 1.42 m a−1. Our measurements indicate the existence of a density-driven water circulation in the cavity beneath the ice shelf of Langhovde Glacier, similar to that proposed for warm-ocean cavities of larger Antarctic ice shelves. © 2021, The Author(s).
语种	英语
scopus关键词	basal melting; data set; freezing; ice shelf; salinity; thermohaline circulation; Antarctica; East Antarctica
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251392
作者单位	Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
推荐引用方式 GB/T 7714	Minowa M.,Sugiyama S.,Ito M.,et al. Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica[J],2021,12(1).
APA	Minowa M.,Sugiyama S.,Ito M.,Yamane S.,&Aoki S..(2021).Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica.Nature Communications,12(1).
MLA	Minowa M.,et al."Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica".Nature Communications 12.1(2021).