globalchange  > 科学计划与规划
DOI: 10.1002/2016GL071538
论文题名:
Extensive winter subglacial water storage beneath the Greenland Ice Sheet
作者: Chu W.; Schroeder D.M.; Seroussi H.; Creyts T.T.; Palmer S.J.; Bell R.E.
刊名: Geophysical Research Letters
ISSN: 0094-8287
EISSN: 1944-8018
出版年: 2016
卷: 43, 期:24
起始页码: 12484
结束页码: 12492
语种: 英语
英文关键词: glacier dynamics ; Greenland Ice Sheet ; ice sheet modeling ; radar sounding ; subglacial hydrology
Scopus关键词: Catchments ; Digital storage ; Glacial geology ; Glaciers ; Hydrology ; Inverse problems ; Radar ; Storage (materials) ; Glacier dynamics ; Greenland Ice Sheet ; Ice sheet models ; Radar soundings ; Subglacial hydrology ; Ice
英文摘要: Surface meltwater that reaches the base of the Greenland Ice Sheet exerts a fundamental impact on ice flow, but observations of catchment-wide movement and distribution of subglacial water remain limited. Using radar-sounding data from two seasons, we identify the seasonal distribution of subglacial water in western Greenland. Our analysis provides evidence of widespread subglacial water storage beneath Greenland in the wintertime. The winter storage is located primarily on bedrock ridges with higher bed elevations in excess of 200 m. During the melt season water moves to the subglacial troughs. This inverse relationship with topography indicates that the material properties of the glacier bed strongly influence subglacial drainage development. Both the spatial variations in bed properties and the initial state of the subglacial hydrology system at the start of the melt season lead to differing glacier dynamical responses to surface melting across the Greenland Ice Sheet. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007420599&doi=10.1002%2f2016GL071538&partnerID=40&md5=30288536011a9adf5954a2cedb5db5ef
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9250
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States

Recommended Citation:
Chu W.,Schroeder D.M.,Seroussi H.,et al. Extensive winter subglacial water storage beneath the Greenland Ice Sheet[J]. Geophysical Research Letters,2016-01-01,43(24).
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