DOI: 10.1002/2014GL062256
论文题名: Quantifying flow regimes in a Greenland glacial fjord using iceberg drifters
作者: Sutherland D.A. ; Roth G.E. ; Hamilton G.S. ; Mernild S.H. ; Stearns L.A. ; Straneo F.
刊名: Geophysical Research Letters
ISSN: 0094-9536
EISSN: 1944-9267
出版年: 2014
卷: 41, 期: 23 起始页码: 8411
结束页码: 8420
语种: 英语
英文关键词: East Greenland Current
; fjord circulation
; Greenland ice sheet
; ice mélange
; iceberg melt
; icebergs
Scopus关键词: Glacial geology
; Ice
; East Greenland coastal currents
; East greenland currents
; Flow variability
; Greenland Ice Sheet
; Icebergs
; Southeast Greenland
; Synoptic circulations
; Velocity gradients
; Sea ice
; episodic event
; fjord
; flow pattern
; glacial environment
; ice drift
; iceberg
; movement
; synoptic meteorology
; Arctic
; Greenland
英文摘要: Large, deep-keeled icebergs are ubiquitous in Greenland's outlet glacial fjords. Here we use the movement of these icebergs to quantify flow variability in Sermilik Fjord, southeast Greenland, from the ice mélange through the fjord to the shelf. In the ice mélange, a proglacial mixture of sea ice and icebergs, we find that icebergs consistently track the glacier speed, with slightly faster speeds near terminus and episodic increases due to calving events. In the fjord, icebergs accurately capture synoptic circulation driven by both along-fjord and along-shelf winds. Recirculation and in-/out-fjord variations occur throughout the fjord more frequently than previously reported, suggesting that across-fjord velocity gradients cannot be ignored. Once on the shelf, icebergs move southeastward in the East Greenland Coastal Current, providing wintertime observations of this freshwater pathway. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921609193&doi=10.1002%2f2014GL062256&partnerID=40&md5=576c51deb4ede9d19c06548cf685eb55
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6800
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological Sciences, University of Oregon, Eugene, OR, United States
Recommended Citation:
Sutherland D.A.,Roth G.E.,Hamilton G.S.,et al. Quantifying flow regimes in a Greenland glacial fjord using iceberg drifters[J]. Geophysical Research Letters,2014-01-01,41(23).