DOI: 10.1002/grl.50825
论文题名: Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations
作者: Xu Y. ; Rignot E. ; Fenty I. ; Menemenlis D. ; Flexas M.M.
刊名: Geophysical Research Letters
ISSN: 0094-8612
EISSN: 1944-8343
出版年: 2013
卷: 40, 期: 17 起始页码: 4648
结束页码: 4653
语种: 英语
英文关键词: climate change
; glaciology
; Greenland
; hydrology
; ocean modeling
Scopus关键词: General circulation model
; glaciology
; Greenland
; High resolution simulations
; High-resolution numerical models
; Massachusetts Institute of Technology
; Ocean model
; Subglacial channels
; Climate change
; Hydrology
; Ice
; Oceanography
; Three dimensional
; climate change
; discharge
; general circulation model
; glaciology
; hydrographic survey
; ice
; melting
; ocean
; plume
; tidewater glacier
; upwelling
; Arctic
; Greenland
; West Greenland
英文摘要: We present three-dimensional, high-resolution simulations of ice melting at the calving face of Store Glacier, a tidewater glacier in West Greenland, using the Massachusetts Institute of Technology general circulation model. We compare the simulated ice melt with an estimate derived from oceanographic data. The simulations show turbulent upwelling and spreading of the freshwater-laden plume along the ice face and the vigorous melting of ice at rates of meters per day. The simulated August 2010 melt rate of 2.0±0.3 m/d is within uncertainties of the melt rate of 3.0±1.0 m/d calculated from oceanographic data. Melting is greatest at depth, above the subglacial channels, causing glacier undercutting. Melt rates increase proportionally to thermal forcing raised to the power of 1.2-1.6 and to subglacial water flux raised to the power of 0.5-0.9. Therefore, in a warmer climate, Store Glacier melting by ocean may increase from both increased ocean temperature and subglacial discharge. Key Points Simulated melt agrees with estimates from a hydrographic survey of the glacier. With more runoff, glaciers will melt faster at constant ocean temperature. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883463399&doi=10.1002%2fgrl.50825&partnerID=40&md5=261fc9d4f006ca7cf6ec5d04e25aa058
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5876
Appears in Collections: 气候减缓与适应
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作者单位: Earth System Science, University of California, 240G Rowland Hall, Irvine, CA 92697, United States
Recommended Citation:
Xu Y.,Rignot E.,Fenty I.,et al. Subaqueous melting of Store Glacier, west Greenland from three-dimensional, high-resolution numerical modeling and ocean observations[J]. Geophysical Research Letters,2013-01-01,40(17).