气候变化领域集成服务门户(CCPortal): Boundary condition of grounding lines prior to collapse, Larsen-B Ice Shelf, Antarctica

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DOI	10.1126/science.1256697
	Boundary condition of grounding lines prior to collapse, Larsen-B Ice Shelf, Antarctica
	Rebesco M.; Domack E.; Zgur F.; Lavoie C.; Leventer A.; Brachfeld S.; Willmott V.; Halverson G.; Truffer M.; Scambos T.; Smith J.; Pettit E.
发表日期	2014
ISSN	0036-8075
起始页码	1354
结束页码	1358
卷号	345 期号:6202
英文摘要	Grounding zones, where ice sheets transition between resting on bedrock to full floatation, help regulate ice flow. Exposure of the sea floor by the 2002 Larsen-B Ice Shelf collapse allowed detailed morphologic mapping and sampling of the embayment sea floor. Marine geophysical data collected in 2006 reveal a large, arcuate, complex grounding zone sediment system at the front of Crane Fjord. Radiocarbon-constrained chronologies from marine sediment cores indicate loss of ice contact with the bed at this site about 12,000 years ago. Previous studies and morphologic mapping of the fjord suggest that the Crane Glacier grounding zone was well within the fjord before 2002 and did not retreat further until after the ice shelf collapse. This implies that the 2002 Larsen-B Ice Shelf collapse likely was a response to surface warming rather than to grounding zone instability, strengthening the idea that surface processes controlled the disintegration of the Larsen Ice Shelf.
英文关键词	Antarctica; article; freezing; greenhouse effect; ice cover; Antarctic Regions; Freezing; Global Warming; Ice Cover
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245192
作者单位	Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Borgo Grotta Gigante 42, Sgonico (TS), C-34010, Italy; Department of Geosciences, Hamilton College, Clinton, NY 13323, United States; College of Marine Science, University of South Florida, 140 7th Avenue South, St. Petersburg, FL 33701-5016, United States; Centre for Environmental and Marine Studies, Department of Geosciences, University of Aveiro, Aveiro, 3810-193, Portugal; Department of Geology, Colgate University, Hamilton, NY 13346, United States; Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, United States; International Cooperation, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung, Am Handelshafen 12, Bremerhaven, 27570, Germany; Earth and Planetary Sciences, McGill University, Montreal, Qc H3A 2A7, Canada; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, United States; National Snow and Ice Data Center, University of Colorad...
推荐引用方式 GB/T 7714	Rebesco M.,Domack E.,Zgur F.,et al. Boundary condition of grounding lines prior to collapse, Larsen-B Ice Shelf, Antarctica[J],2014,345(6202).
APA	Rebesco M..,Domack E..,Zgur F..,Lavoie C..,Leventer A..,...&Pettit E..(2014).Boundary condition of grounding lines prior to collapse, Larsen-B Ice Shelf, Antarctica.Science,345(6202).
MLA	Rebesco M.,et al."Boundary condition of grounding lines prior to collapse, Larsen-B Ice Shelf, Antarctica".Science 345.6202(2014).