DOI: 10.5194/tc-9-603-2015
Scopus记录号: 2-s2.0-84926650209
论文题名: Self-regulation of ice flow varies across the ablation area in south-west Greenland
作者: 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
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期: 2 起始页码: 603
结束页码: 611
语种: 英语
英文关键词: ablation
; acceleration
; ice sheet
; melting
; monitoring
; pressure effect
; spatiotemporal analysis
; velocity
; Arctic
; Greenland
; Greenland Ice Sheet
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75322
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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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
Recommended Citation:
Van De Wal R,S,W,et al. Self-regulation of ice flow varies across the ablation area in south-west Greenland[J]. Cryosphere,2015-01-01,9(2)