气候变化领域集成服务门户(CCPortal): Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming

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DOI	10.5194/tc-9-245-2015
	Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming
	Lüthi M.P.; Ryser C.; Andrews L.C.; Catania G.A.; Funk M.; Hawley R.L.; Hoffman M.J.; Neumann T.A.
发表日期	2015
ISSN	19940416
卷号	9 期号:1
英文摘要	Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice temperatures are considerably higher than would be expected from heat diffusion and dissipation alone. The possible causes for this extra heat are evaluated using a Lagrangian heat flow model. The model results reveal that the observations can be explained with a combination of different processes: enhanced dissipation (strain heating) in ice-age ice, temperate paleo-firn, and cryo-hydrologic warming in deep crevasses.
学科领域	crevasse; firn; heat flow; heat flux; ice sheet; numerical model; Pleistocene; temperature profile; Arctic; Greenland; Greenland Ice Sheet; Calluna vulgaris
语种	英语
scopus关键词	crevasse; firn; heat flow; heat flux; ice sheet; numerical model; Pleistocene; temperature profile; Arctic; Greenland; Greenland Ice Sheet; Calluna vulgaris
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119979
作者单位	Versuchsanstalt für Wasserbau, Hydrologie und Glaziologie (VAW), ETH Zurich, Zurich, 8093, Switzerland; Institute for Geophysics, University of Texas at Austin, Austin, TX 78758, United States; Dept. of Geological Sciences, University of Texas at Austin, Austin, TX 78713, United States; Dept. of Earth Sciences, Dartmouth College, Hanover, NH 03755, United States; Fluid Dynamics and Solid Mechanics Group, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; NASA Goddard Space Flight Center, Code 615, Greenbelt, MD 20770, United States; Geographical Institute, University of Zurich, Zurich, 8057, Switzerland
推荐引用方式 GB/T 7714	Lüthi M.P.,Ryser C.,Andrews L.C.,et al. Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming[J],2015,9(1).
APA	Lüthi M.P..,Ryser C..,Andrews L.C..,Catania G.A..,Funk M..,...&Neumann T.A..(2015).Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming.Cryosphere,9(1).
MLA	Lüthi M.P.,et al."Heat sources within the Greenland Ice Sheet: Dissipation, temperate paleo-firn and cryo-hydrologic warming".Cryosphere 9.1(2015).