气候变化领域集成服务门户(CCPortal): Evolution of Supraglacial Lakes on the Larsen B Ice Shelf in the Decades Before it Collapsed

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DOI	10.1029/2019GL085591
	Evolution of Supraglacial Lakes on the Larsen B Ice Shelf in the Decades Before it Collapsed
	Leeson A.A.; Forster E.; Rice A.; Gourmelen N.; van Wessem J.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	The Larsen B ice shelf collapsed in 2002 losing an area twice the size of Greater London to the sea (3,000 km2), in an event associated with widespread supraglacial lake drainage. Here we use optical and radar satellite imagery to investigate the evolution of the ice shelf's lakes in the decades preceding collapse. We find (1) that lakes spread southward in the preceding decades at a rate commensurate with meltwater saturation of the shelf surface; (2) no trend in lake size, suggesting an active supraglacial drainage network which evacuated excess water off the shelf; and (3) lakes mostly refreeze in winter but the few lakes that do drain are associated with ice breakup 2–4 years later. Given the relative scale of lake drainage and shelf breakup, however, it is not clear from our data whether lake drainage is more likely a cause, or an effect, of ice shelf collapse. © 2020. The Authors.
英文关键词	Climate change; Hydrology; Lakes; Satellite imagery; Antarctica; Drainage networks; Excess waters; Greater London; Ice break-up; Ice sheet; Ice shelves; Optical and radar satellite imagery; Ice; climate change; drainage network; glacial lake; hydrology; ice breakup; ice shelf; meltwater; radar imagery; satellite imagery; England; London [England]; United Kingdom
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170649
作者单位	Data Science Institute, Lancaster University, Lancaster, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; School of Mathematics and Statistics, Lancaster University, Lancaster, United Kingdom; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom; Institute for Marine and Atmospheric research Utrecht (IMAU), University of Utrecht, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Leeson A.A.,Forster E.,Rice A.,et al. Evolution of Supraglacial Lakes on the Larsen B Ice Shelf in the Decades Before it Collapsed[J],2020,47(4).
APA	Leeson A.A.,Forster E.,Rice A.,Gourmelen N.,&van Wessem J.M..(2020).Evolution of Supraglacial Lakes on the Larsen B Ice Shelf in the Decades Before it Collapsed.Geophysical Research Letters,47(4).
MLA	Leeson A.A.,et al."Evolution of Supraglacial Lakes on the Larsen B Ice Shelf in the Decades Before it Collapsed".Geophysical Research Letters 47.4(2020).