气候变化领域集成服务门户(CCPortal): Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation

CCPortal

DOI	10.1038/s41467-021-27053-6
	Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation
	Weber M.E.; Golledge N.R.; Fogwill C.J.; Turney C.S.M.; Thomas Z.A.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Emerging ice-sheet modeling suggests once initiated, retreat of the Antarctic Ice Sheet (AIS) can continue for centuries. Unfortunately, the short observational record cannot resolve the tipping points, rate of change, and timescale of responses. Iceberg-rafted debris data from Iceberg Alley identify eight retreat phases after the Last Glacial Maximum that each destabilized the AIS within a decade, contributing to global sea-level rise for centuries to a millennium, which subsequently re-stabilized equally rapidly. This dynamic response of the AIS is supported by (i) a West Antarctic blue ice record of ice-elevation drawdown >600 m during three such retreat events related to globally recognized deglacial meltwater pulses, (ii) step-wise retreat up to 400 km across the Ross Sea shelf, (iii) independent ice sheet modeling, and (iv) tipping point analysis. Our findings are consistent with a growing body of evidence suggesting the recent acceleration of AIS mass loss may mark the beginning of a prolonged period of ice sheet retreat and substantial global sea level rise. © 2021, The Author(s).
语种	英语
scopus关键词	decadal variation; drawdown; dynamic response; ice sheet; last deglaciation; Last Glacial Maximum; meltwater; sea level change; acceleration; Antarctica; article; body weight; deglaciation; ice sheet; iceberg; last glacial maximum; Ross Sea; sea level rise; Antarctic Ice Sheet; Antarctica; Ross Sea; Southern Ocean
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/250575
作者单位	Institute for Geosciences, Department of Geochemistry and Petrology, University of Bonn, Bonn, Germany; Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand; School of Geography, Geology and the Environment, University of Keele, Staffordshire, United Kingdom; Earth and Sustainability Science Research Centre, School of Biological Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence in Australian Biodiversity and Heritage, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Weber M.E.,Golledge N.R.,Fogwill C.J.,et al. Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation[J],2021,12(1).
APA	Weber M.E.,Golledge N.R.,Fogwill C.J.,Turney C.S.M.,&Thomas Z.A..(2021).Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation.Nature Communications,12(1).
MLA	Weber M.E.,et al."Decadal-scale onset and termination of Antarctic ice-mass loss during the last deglaciation".Nature Communications 12.1(2021).