globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-9-1333-2015
Scopus记录号: 2-s2.0-84937043904
论文题名:
Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet
作者: Koenig L; S; , Lampkin D; J; , Montgomery L; N; , Hamilton S; L; , Turrin J; B; , Joseph C; A; , Moutsafa S; E; , Panzer B; , Casey K; A; , Paden J; D; , Leuschen C; , Gogineni P
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期:4
起始页码: 1333
结束页码: 1342
语种: 英语
英文关键词: airborne sensing ; color ; glacial lake ; ice sheet ; meltwater ; radar ; water storage ; winter ; Arctic ; Greenland ; Greenland Ice Sheet
英文摘要: Increased surface melt over the Greenland Ice Sheet (GrIS) is now estimated to account for half or more of the ice sheet's total mass loss. Here, we show that some meltwater is stored, over winter, in buried supraglacial lakes. We use airborne radar from Operation IceBridge between 2009 and 2012 to detect buried supraglacial lakes, and we find that they were distributed extensively around the GrIS margin through that period. Buried supraglacial lakes can persist through multiple winters and are, on average, ∼ 1.9 + 0.2m below the surface. Most buried supraglacial lakes exist with no surface expression of their occurrence in visible imagery. The few buried supraglacial lakes that do exhibit surface expression have a unique visible signature associated with a darker blue color where subsurface water is located. The volume of retained water in the buried supraglacial lakes is likely insignificant compared to the total mass loss from the GrIS, but the water may have important implications locally for the development of the englacial hydrologic system and ice temperatures. Buried supraglacial lakes represent a small but year-round source of meltwater in the GrIS hydrologic system. © Author(s) 2015.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75277
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: Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Atmospheric and Oceanic Sciences, University of Maryland, College Park, MD, United States; Bowdoin College, Brunswick, ME, United States; Department of Geography, University of Utah, Salt Lake City, UT, United States; Department of Geography, Rutgers, State University of New Jersey, Piscataway, NJ, United States; Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, KS, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States

Recommended Citation:
Koenig L,S,, Lampkin D,et al. Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet[J]. Cryosphere,2015-01-01,9(4)
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