DOI: 10.1002/2013GL058558
论文题名: Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada
作者: Van Wychen W. ; Burgess D.O. ; Gray L. ; Copland L. ; Sharp M. ; Dowdeswell J.A. ; Benham T.J.
刊名: Geophysical Research Letters
ISSN: 0094-10432
EISSN: 1944-10163
出版年: 2014
卷: 41, 期: 2 起始页码: 484
结束页码: 490
语种: 英语
英文关键词: dynamic ice discharge
; glacier dynamics
; speckle tracking
Scopus关键词: Earth sciences
; Geophysics
; Air temperature
; Canadian Arctic Archipelago
; Glacier dynamics
; Ice discharges
; Interannual variability
; Queen Elizabeth islands
; Speckle tracking
; Surface velocity
; Ice
; air temperature
; discharge
; glacial transport
; ice flow
; ice movement
; mass transfer
; Arctic Ocean
; Canada
; Queen Elizabeth Islands
英文摘要: Recent studies indicate an increase in glacier mass loss from the Canadian Arctic Archipelago as a result of warmer summer air temperatures. However, no complete assessment of dynamic ice discharge from this region exists. We present the first complete surface velocity mapping of all ice masses in the Queen Elizabeth Islands and show that these ice masses discharged ∼2.6 ± 0.8 Gt a-1 of ice to the oceans in winter 2012. Approximately 50% of the dynamic discharge was channeled through non surge-type Trinity and Wykeham Glaciers alone. Dynamic discharge of the surge-type Mittie Glacier varied from 0.90 ± 0.09 Gt a-1 during its 2003 surge to 0.02 ± 0.02 Gt a-1 during quiescence in 2012, highlighting the importance of surge-type glaciers for interannual variability in regional mass loss. Queen Elizabeth Islands glaciers currently account for ∼7.5% of reported dynamic discharge from Arctic ice masses outside Greenland. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892734637&doi=10.1002%2f2013GL058558&partnerID=40&md5=53946498ec70c2b1bd1478b07ba0dde8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7696
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geography, University of Ottawa, Ottawa, ON, Canada
Recommended Citation:
Van Wychen W.,Burgess D.O.,Gray L.,et al. Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada[J]. Geophysical Research Letters,2014-01-01,41(2).