气候变化领域集成服务门户(CCPortal): Grounding Line Retreat of Denman Glacier; East Antarctica; Measured With COSMO-SkyMed Radar Interferometry Data

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DOI	10.1029/2019GL086291
	Grounding Line Retreat of Denman Glacier; East Antarctica; Measured With COSMO-SkyMed Radar Interferometry Data
	Brancato V.; Rignot E.; Milillo P.; Morlighem M.; Mouginot J.; An L.; Scheuchl B.; Jeong S.; Rizzoli P.; Bueso Bello J.L.; Prats-Iraola P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:7
英文摘要	Denman Glacier, East Antarctica, holds an ice volume equivalent to a 1.5 m rise in global sea level. Using satellite radar interferometry from the COSMO-SkyMed constellation, we detect a 5.4 ± 0.3 km grounding line retreat between 1996 and 2017–2018. A novel reconstruction of the glacier bed topography indicates that the retreat proceeds on the western flank along a previously unknown 5 km wide, 1,800 m deep trough, deepening to 3,400 m below sea level. On the eastern flank, the grounding line is stabilized by a 10 km wide ridge. At tidal frequencies, the grounding line extends over a several kilometer-wide grounding zone, enabling warm ocean water to melt ice at critical locations for glacier stability. If warm, modified Circumpolar Deep Water reaches the sub-ice-shelf cavity and continues to melt ice at a rate exceeding balance conditions, the potential exists for Denman Glacier to retreat irreversibly into the deepest, marine-based basin in Antarctica. ©2020. The Authors
英文关键词	Interferometry; Radar; Radar measurement; Sea level; Topography; Bed topography; Critical location; East antarctica; Global sea levels; Modified circumpolar deep waters; Radar interferometry; Satellite radar interferometry; Tidal frequencies; Ice; Antarctic Circumpolar Wave; COSMO-SkyMed; glacier retreat; grounding line; radar interferometry; satellite constellation; satellite data; Antarctica; British Columbia; Canada; Denman Island; East Antarctica; Gulf Islands
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/170514
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States; Department of Earth System Science, University of California, Irvine, United States; Department of Civil and Environmental Engineering, University of California, Irvine, United States; University Grenoble Alpes, CNRS, INP, Grenoble IGE, Grenoble, France; German Aerospace Center (DLR), Microwaves and Radar Institute, Weßling, Germany
推荐引用方式 GB/T 7714	Brancato V.,Rignot E.,Milillo P.,et al. Grounding Line Retreat of Denman Glacier; East Antarctica; Measured With COSMO-SkyMed Radar Interferometry Data[J],2020,47(7).
APA	Brancato V..,Rignot E..,Milillo P..,Morlighem M..,Mouginot J..,...&Prats-Iraola P..(2020).Grounding Line Retreat of Denman Glacier; East Antarctica; Measured With COSMO-SkyMed Radar Interferometry Data.Geophysical Research Letters,47(7).
MLA	Brancato V.,et al."Grounding Line Retreat of Denman Glacier; East Antarctica; Measured With COSMO-SkyMed Radar Interferometry Data".Geophysical Research Letters 47.7(2020).