气候变化领域集成服务门户(CCPortal): Self-regulation of ice flow varies across the ablation area in south-west Greenland

CCPortal

DOI	10.5194/tc-9-603-2015
	Self-regulation of ice flow varies across the ablation area in south-west Greenland
	Van De Wal R.S.W.; Smeets C.J.P.P.; Boot W.; Stoffelen M.; Van Kampen R.; Doyle S.H.; Wilhelms F.; Van Den Broeke M.R.; Reijmer C.H.; Oerlemans J.; Hubbard A.
发表日期	2015
ISSN	19940416
卷号	9 期号:2
英文摘要	The concept of a positive feedback between ice flow and enhanced melt rates in a warmer climate fuelled the debate regarding the temporal and spatial controls on seasonal ice acceleration. Here we combine melt, basal water pressure and ice velocity data. Using 20 years of data covering the whole ablation area, we show that there is not a strong positive correlation between annual ice velocities and melt rates. Annual velocities even slightly decreased with increasing melt. Results also indicate that melt variations are most important for velocity variations in the upper ablation zone up to the equilibrium line altitude. During the extreme melt in 2012, a large velocity response near the equilibrium line was observed, highlighting the possibility of meltwater to have an impact even high on the ice sheet. This may lead to an increase of the annual ice velocity in the region above S9 and requires further monitoring. © Author(s) 2015.
学科领域	ablation; acceleration; ice sheet; melting; monitoring; pressure effect; spatiotemporal analysis; velocity; Arctic; Greenland; Greenland Ice Sheet
语种	英语
scopus关键词	ablation; acceleration; ice sheet; melting; monitoring; pressure effect; spatiotemporal analysis; velocity; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119924
作者单位	Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Netherlands; Centre for Glaciology, Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, United Kingdom; Alfred Wegener Institute, Bremerhaven, Germany
推荐引用方式 GB/T 7714	Van De Wal R.S.W.,Smeets C.J.P.P.,Boot W.,et al. Self-regulation of ice flow varies across the ablation area in south-west Greenland[J],2015,9(2).
APA	Van De Wal R.S.W..,Smeets C.J.P.P..,Boot W..,Stoffelen M..,Van Kampen R..,...&Hubbard A..(2015).Self-regulation of ice flow varies across the ablation area in south-west Greenland.Cryosphere,9(2).
MLA	Van De Wal R.S.W.,et al."Self-regulation of ice flow varies across the ablation area in south-west Greenland".Cryosphere 9.2(2015).