气候变化领域集成服务门户(CCPortal): Rapid glacier retreat rates observed in West Antarctica

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DOI	10.1038/s41561-021-00877-z
	Rapid glacier retreat rates observed in West Antarctica
	Milillo P.; Rignot E.; Rizzoli P.; Scheuchl B.; Mouginot J.; Bueso-Bello J.L.; Prats-Iraola P.; Dini L.
发表日期	2022
ISSN	1752-0894
卷号	15 期号:1
英文摘要	The Pope, Smith and Kohler glaciers, in the Amundsen Sea Embayment of West Antarctica, have experienced enhanced ocean-induced ice-shelf melt, glacier acceleration, ice thinning and grounding-line retreat in the past 30 years. Here we present observations of the grounding-line retreat of these glaciers since 2014 using a constellation of interferometric radar satellites combined with precision surface elevation data. We find that the grounding lines develop spatially variable, kilometre-scale, tidally induced migration zones. After correction for tidal effects, we detect a sustained pattern of retreat coincident with high melt rates of ungrounded ice, marked by episodes of more rapid retreat. In 2017, Pope Glacier retreated 3.5 km in 3.6 months, or 11.7 km yr–1. In 2016–2018, Smith West retreated at 2 km yr–1 and Kohler at 1.3 km yr–1. While the retreat slowed in 2018–2020, these retreat rates are faster than anticipated by numerical models on yearly timescales. We hypothesize that the rapid retreat is caused by unrepresented, vigorous ice–ocean interactions acting within newly formed cavities at the ice–ocean boundary. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	glacier retreat; grounding line; ice shelf; melt; thinning; Amundsen Sea; Antarctica; Pope Glacier; Southern Ocean; West Antarctica
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250802
作者单位	Department of Civil and Environmental Engineering, University of Houston, Houston, TX, United States; Department of Earth System Science, University of California, Irvine, CA, United States; German Aerospace Center (DLR), Microwaves and Radar Institute, Munich, Germany; Department of Civil and Environmental Engineering, University of California, Irvine, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, France; Italian Space Agency (ASI), Matera, Italy
推荐引用方式 GB/T 7714	Milillo P.,Rignot E.,Rizzoli P.,et al. Rapid glacier retreat rates observed in West Antarctica[J],2022,15(1).
APA	Milillo P..,Rignot E..,Rizzoli P..,Scheuchl B..,Mouginot J..,...&Dini L..(2022).Rapid glacier retreat rates observed in West Antarctica.Nature Geoscience,15(1).
MLA	Milillo P.,et al."Rapid glacier retreat rates observed in West Antarctica".Nature Geoscience 15.1(2022).