| DOI: | 10.1002/2013GL058383
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| 论文题名: | Greenland subglacial lakes detected by radar |
| 作者: | Palmer S.J.; Dowdeswell J.A.; Christoffersen P.; Young D.A.; Blankenship D.D.; Greenbaum J.S.; Benham T.; Bamber J.; Siegert M.J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8333
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| EISSN: | 1944-8064
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| 出版年: | 2013
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| 卷: | 40, 期:23 | | 起始页码: | 6154
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| 结束页码: | 6159
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| 语种: | 英语
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| 英文关键词: | airborne radar
; Greenland ice sheet
; subglacial lakes
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| Scopus关键词: | Airborne radars
; Antarctic ice sheets
; Closed systems
; Echo sounders
; Greenland Ice Sheet
; Hydrological system
; Ice sheet
; Subglacial lakes
; Glacial geology
; Glaciers
; Ice
; Lakes
; echo sounder
; ice margin
; ice sheet
; lake water
; meltwater
; radar
; subglacial environment
; Arctic
; Greenland
; Greenland Ice Sheet
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| 英文摘要: | Subglacial lakes are an established and important component of the basal hydrological system of the Antarctic ice sheets, but none have been reported from Greenland. Here we present airborne radio echo sounder (RES) measurements that provide the first clear evidence for the existence of subglacial lakes in Greenland. Two lakes, with areas ~8 and ~10 km2, are found in the northwest sector of the ice sheet, ~40 km from the ice margin, and below 757 and 809 m of ice, respectively. The setting of the Greenland lakes differs from those of Antarctic subglacial lakes, being beneath relatively thin and cold ice, pointing to a fundamental difference in their nature and genesis. Possibilities that the lakes consist of either ancient saline water in a closed system or are part of a fresh, modern open hydrological system are discussed, with the latter interpretation considered more likely. Key Points We have discovered subglacial lakes beneath the Greenland ice sheet The setting of the subglacial lakes is unusual compared with Antarctic lakes The subglacial lake water is likely to be derived from supraglacial meltwater ©2013. The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889608464&doi=10.1002%2f2013GL058383&partnerID=40&md5=f606f420402d16da91042f6b81815dbe
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5597
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Scott Polar Research Institute, University of Cambridge, Lensfield Rd., Cambridge CB2 1ER, United Kingdom
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| Recommended Citation: | |
Palmer S.J.,Dowdeswell J.A.,Christoffersen P.,et al. Greenland subglacial lakes detected by radar[J]. Geophysical Research Letters,2013-01-01,40(23).
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