气候变化领域集成服务门户(CCPortal): Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions

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DOI	10.1016/j.quascirev.2020.106314
	Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions
	Petrini M.; Colleoni F.; Kirchner N.; Hughes A.L.C.; Camerlenghi A.; Rebesco M.; Lucchi R.G.; Forte E.; Colucci R.R.; Noormets R.; Mangerud J.
发表日期	2020
ISSN	0277-3791
卷号	238
英文摘要	The Barents Sea Ice Sheet was part of an interconnected complex of ice sheets, collectively referred to as the Eurasian Ice Sheet, which covered north-westernmost Europe, Russia and the Barents Sea during the Last Glacial Maximum (around 21 ky BP). Due to common geological features, the Barents Sea component of this ice complex is seen as a paleo-analogue for the present-day West Antarctic Ice Sheet. Investigating key processes driving the last deglaciation of the Barents Sea Ice Sheet represents an important tool to interpret recent observations in Antarctica over the multi-millennial temporal scale of glaciological changes. We present results from a perturbed physics ensemble of ice sheet model simulations of the last deglaciation of the Barents Sea Ice Sheet, forced with transient atmospheric and oceanic conditions derived from AOGCM simulations. The ensemble of transient simulations is evaluated against the data-based DATED-1 reconstruction to construct minimum, maximum and average deglaciation scenarios. Despite a large model/data mismatch at the western and eastern ice sheet margins, the simulated and DATED-1 deglaciation scenarios agree well on the timing of the deglaciation of the central and northern Barents Sea. We find that the simulated deglaciation of the Barents Sea Ice Sheet is primarily driven by the oceanic forcing, with prescribed eustatic sea level rise amplifying the ice sheet sensitivity to sub-shelf melting over relatively short intervals. Our results highlight that the sub-shelf melting has a very strong control on the simulated grounding-line flux, showing that a slow, gradual ocean warming trend is capable of triggering sustained grounded ice discharge over multi-millennial timescales, even without taking into account marine ice sheet or ice cliff instability. © 2020 Elsevier Ltd
英文关键词	Barents sea; Glaciology; Ice sheet modelling; Ocean melting; Quaternary
语种	英语
scopus关键词	Glaciers; Melting; Sea ice; Sea level; Eustatic sea-level rise; Geological features; Last deglaciation; Last Glacial Maximum; Northern Barents Sea; Oceanic conditions; Transient simulation; West antarctic ice sheets; Ice control; glaciology; ice sheet; last deglaciation; Last Glacial Maximum; reconstruction; sea ice; sea level change; Antarctic Ice Sheet; Antarctica; Arctic Ocean; Barents Sea; Europe; Russian Federation; West Antarctic Ice Sheet; West Antarctica
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151459
作者单位	OGS (Istituto Nazionale di Oceanografia e Geofisica Sperimentale), Borgo Grotta Gigante 42/c, Sgonico (TS), 34010, Italy; Bolin Centre for Climate Research, Stockholm University, Stockholm, SE-106 91, Sweden; Department of Physical Geography, Stockholm University, Stockholm, SE-106 91, Sweden; Department of Earth Science, University of Bergen and Bjerknes Centre for Climate Research, Bergen, N-5007, Norway; Department of Geography, University of Manchester, Oxford Rd M13 9PL, Manchester, United Kingdom; Dipartimento di Matematica e Geoscience, Università di Trieste, via Weiss 1, Trieste (TS), 34128, Italy; ISMAR (Istituto di Scienze Marine), Trieste, Italy; The University Centre in Svalbard (UNIS), P.O. Box 156 Northern-9171, Longyearbyen, Norway; Department of Geoscience and Remote Sensing, Delft University of Technology (TUDelft), Delft, Netherlands
推荐引用方式 GB/T 7714	Petrini M.,Colleoni F.,Kirchner N.,et al. Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions[J],2020,238.
APA	Petrini M..,Colleoni F..,Kirchner N..,Hughes A.L.C..,Camerlenghi A..,...&Mangerud J..(2020).Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions.Quaternary Science Reviews,238.
MLA	Petrini M.,et al."Simulated last deglaciation of the Barents Sea Ice Sheet primarily driven by oceanic conditions".Quaternary Science Reviews 238(2020).