气候变化领域集成服务门户(CCPortal): Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation

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DOI	10.1029/2020GL088796
	Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation
	Lane T.P.; Paasche Ø.; Kvisvik B.; Adamson K.R.; Rodés Á.; Patton H.; Gomez N.; Gheorghiu D.; Bakke J.; Hubbard A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	The dynamics and paleo-glaciology of ice sheet interiors during the last deglaciation are poorly constrained, hindering ice sheet model. We provide direct evidence of Fennoscandian Ice Sheet (FIS) interior behavior during deglaciation through surface exposure dating. Our results demonstrate early thinning of the FIS, prior to the Younger Dryas (YD, 12.8–11.7 ka). Interior thinning in central Norway was concurrent with retreat along the coastline, exposing ice-free mountainous tracts, potentially as early as 20–15 ka. The FIS then formed moraines in these ice-free tracts during the YD. This is contrary to current hypotheses advocating a landscape fully covered by cold, inactive ice during this period. Present empirical and model reconstructions fail to capture rapid interior downwastage, increasing uncertainties in ice sheet volume estimates and sea level contributions. ©2020. The Authors.
英文关键词	Glaciers; Sea level; Uncertainty analysis; Deglaciations; Early thinning; Ice sheet models; Last deglaciation; Model reconstruction; Surface exposure dating; Volume estimates; Younger Dryas; Ice; ice sheet; last deglaciation; moraine; sea level; Younger Dryas; Fennoscandia; Norway
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/170107
作者单位	School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom; Bjerknes Centre for Climate Research, Bergen, Norway; NORCE Climate, Bergen, Norway; COWI, Bergen, Norway; School of Science and the Environment, Manchester Metropolitan University, Manchester, United Kingdom; NERC Cosmogenic Isotope Analysis Facility, Scottish Universities Environmental Research Centre, East Kilbride, United Kingdom; Centre for Arctic Gas Hydrate, Environment and Climate, The Arctic University of Norway, Tromsø, Norway; Department of Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; Kvantum Institute, University of Oulu, Oulu, Finland
推荐引用方式 GB/T 7714	Lane T.P.,Paasche Ø.,Kvisvik B.,et al. Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation[J],2020,47(14).
APA	Lane T.P..,Paasche Ø..,Kvisvik B..,Adamson K.R..,Rodés Á..,...&Hubbard A..(2020).Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation.Geophysical Research Letters,47(14).
MLA	Lane T.P.,et al."Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation".Geophysical Research Letters 47.14(2020).