| DOI: | 10.1002/2016GL069458
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| 论文题名: | Paleofluvial landscape inheritance for Jakobshavn Isbræ catchment, Greenland |
| 作者: | Cooper M.A.; Michaelides K.; Siegert M.J.; Bamber J.L.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9607
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| EISSN: | 1944-9338
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| 出版年: | 2016
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| 卷: | 43, 期:12 | | 起始页码: | 6350
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| 结束页码: | 6357
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| 语种: | 英语
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| 英文关键词: | fluvial erosion
; geomorphology
; glacial erosion
; Greenland ice sheet
; landscape inheritance
; paleofluvial origin
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| Scopus关键词: | Catchments
; Erosion
; Geomorphology
; Glacial geology
; Glaciers
; Radio systems
; Runoff
; Fluvial erosion
; Glacial erosion
; Greenland Ice Sheet
; Landscape inheritance
; Paleofluvial origin
; Ice
; catchment
; drainage basin
; fluvial geomorphology
; glacial erosion
; ground penetrating radar
; ice flow
; landscape evolution
; morphometry
; topographic mapping
; uplift
; Arctic
; Greenland
; Greenland Ice Sheet
; Jakobshavn Glacier
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| 英文摘要: | Subglacial topography exerts strong controls on glacier dynamics, influencing the orientation and velocity of ice flow, as well as modulating the distribution of basal waters and sediment. Bed geometry can also provide a long-term record of geomorphic processes, allowing insight into landscape evolution, the origin of which may predate ice sheet inception. Here we present evidence from ice-penetrating radar data for a large dendritic drainage network, radiating inland from Jakobshavn Isbræ, Greenland's largest outlet glacier. The size of the drainage basin is ∼450,000 km2 and accounts for about 20% of the total land area of Greenland. Topographic and basin morphometric analyses of an isostatically uplifted (ice-free) bedrock topography suggests that this catchment predates ice sheet initiation and has likely been instrumental in controlling the location and form of the Jakobshavn ice stream, and ice flow from the deep interior to the margin, now and over several glacial cycles. ©2016. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978289076&doi=10.1002%2f2016GL069458&partnerID=40&md5=5286f0075786197bcfd3e10f98a15f68
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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/10570
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| 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: | School of Geographical Sciences, University of Bristol, Bristol, United Kingdom
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| Recommended Citation: | |
Cooper M.A.,Michaelides K.,Siegert M.J.,et al. Paleofluvial landscape inheritance for Jakobshavn Isbræ catchment, Greenland[J]. Geophysical Research Letters,2016-01-01,43(12).
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