| DOI: | 10.1002/2013GL058947
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| 论文题名: | Complex network of channels beneath an Antarctic ice shelf |
| 作者: | Langley K.; Von Deschwanden A.; Kohler J.; Sinisalo A.; Matsuoka K.; Hattermann T.; Humbert A.; Nøst O.A.; Isaksson E.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10374
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| EISSN: | 1944-10105
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| 出版年: | 2014
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| 卷: | 41, 期:4 | | 起始页码: | 1209
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| 结束页码: | 1215
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| 语种: | 英语
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| 英文关键词: | Antarctica
; basal channels
; Ice Shelf
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| Scopus关键词: | Melting
; Oceanography
; Active microwave
; Antarctic ice shelves
; Antarctica
; basal channels
; Cold ocean waters
; Ground Penetrating Radar
; Ice shelves
; Surface freezing
; Ice
; freezing
; ground penetrating radar
; ice sheet
; ice shelf
; marine environment
; satellite imagery
; Antarctica
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| 英文摘要: | Ice shelves play an important role in stabilizing the interior grounded ice of the large ice sheets. The thinning of major ice shelves observed in recent years, possibly in connection to warmer ocean waters coming into contact with the ice-shelf base, has focused attention on the ice-ocean interface. Here we reveal a complex network of sub ice-shelf channels under the Fimbul Ice Shelf, Antarctica, mapped using ground-penetrating radar over a 100 km2 grid. The channels are 300-500 m wide and 50 m high, among the narrowest of any reported. Observing narrow channels beneath an ice shelf that is mainly surrounded by cold ocean waters, with temperatures close to the surface freezing point, shows that channelized basal melting is not restricted to rapidly melting ice shelves, indicating that spatial melt patterns around Antarctica are likely to vary on scales that are not yet incorporated in ice-ocean models. Key Points Network of narrow basal channels is mapped beneath a cool Antarctic ice shelf The narrow channels can be mapped with active microwave satellites ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893862768&doi=10.1002%2f2013GL058947&partnerID=40&md5=d87d999f5efddd016aa5b71380f6dc43
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| Citation statistics: |
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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/7638
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Norwegian Polar Institute, Tromsø, Norway
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| Recommended Citation: | |
Langley K.,Von Deschwanden A.,Kohler J.,et al. Complex network of channels beneath an Antarctic ice shelf[J]. Geophysical Research Letters,2014-01-01,41(4).
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