气候变化领域集成服务门户(CCPortal): Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet

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DOI	10.1126/science.1158540
	Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet
	Van De Wal R.S.W.; Boot W.; Van Den Broeke M.R.; Smeets C.J.P.P.; Reijmer C.H.; Donker J.J.A.; Oerlemans J.
发表日期	2008
ISSN	0036-8075
起始页码	111
结束页码	113
卷号	321 期号:5885
英文摘要	Continuous Global Positioning System observations reveal rapid and large ice velocity fluctuations in the western ablation zone of the Greenland Ice Sheet. Within days, ice velocity reacts to increased meltwater production and increases by a factor of 4. Such a response is much stronger and much faster than previously reported. Over a longer period of 17 years, annual ice velocities have decreased slightly, which suggests that the englacial hydraulic system adjusts constantly to the variable meltwater input, which results in a more or less constant ice flux over the years. The positive-feedback mechanism between melt rate and ice velocity appears to be a seasonal process that may have only a limited effect on the response of the ice sheet to climate warming over the next decades.
英文关键词	ice; ablation; climate change; GPS; ice sheet; meltwater; article; climate change; glacier; global positioning system; Greenland; priority journal; velocity; Arctic; Greenland; Greenland Ice Sheet
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/245819
作者单位	Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Netherlands
推荐引用方式 GB/T 7714	Van De Wal R.S.W.,Boot W.,Van Den Broeke M.R.,et al. Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet[J],2008,321(5885).
APA	Van De Wal R.S.W..,Boot W..,Van Den Broeke M.R..,Smeets C.J.P.P..,Reijmer C.H..,...&Oerlemans J..(2008).Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet.Science,321(5885).
MLA	Van De Wal R.S.W.,et al."Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet".Science 321.5885(2008).