气候变化领域集成服务门户(CCPortal): Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland

CCPortal

DOI	10.1038/s41561-022-01082-2
	Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland
	Franke, Steven; Bons, Paul D.; Westhoff, Julien; Weikusat, Ilka; Binder, Tobias; Streng, Kyra; Steinhage, Daniel; Helm, Veit; Eisen, Olaf; Paden, John D.; Eagles, Graeme; Jansen, Daniela
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	995
结束页码	+
卷号	15 期号:12 页码:16
英文摘要	Reliable knowledge of ice discharge dynamics for the Greenland ice sheet via its ice streams is essential if we are to understand its stability under future climate scenarios. Currently active ice streams in Greenland have been well mapped using remote-sensing data while past ice-stream paths in what are now deglaciated regions can be reconstructed from the landforms they left behind. However, little is known about possible former and now defunct ice streams in areas still covered by ice. Here we use radio-echo sounding data to decipher the regional ice-flow history of the northeastern Greenland ice sheet on the basis of its internal stratigraphy. By creating a three-dimensional reconstruction of time-equivalent horizons, we map folds deep below the surface that we then attribute to the deformation caused by now-extinct ice streams. We propose that locally this ancient ice-flow regime was much more focused and reached much farther inland than today's and was deactivated when the main drainage system was reconfigured and relocated southwards. The insight that major ice streams in Greenland might start, shift or abruptly disappear will affect future approaches to understanding and modelling the response of Earth's ice sheets to global warming.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000928399600007
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272448
作者单位	Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Eberhard Karls University of Tubingen; China University of Geosciences; University of Copenhagen; Niels Bohr Institute; University of Bremen; University of Kansas
推荐引用方式 GB/T 7714	Franke, Steven,Bons, Paul D.,Westhoff, Julien,et al. Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland[J],2022,15(12):16.
APA	Franke, Steven.,Bons, Paul D..,Westhoff, Julien.,Weikusat, Ilka.,Binder, Tobias.,...&Jansen, Daniela.(2022).Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland.NATURE GEOSCIENCE,15(12),16.
MLA	Franke, Steven,et al."Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland".NATURE GEOSCIENCE 15.12(2022):16.