气候变化领域集成服务门户(CCPortal): Restoring mass conservation to shallow ice flow models over complex terrain

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DOI	10.5194/tc-7-229-2013
	Restoring mass conservation to shallow ice flow models over complex terrain
	Jarosch A.H.; Schoof C.G.; Anslow F.S.
发表日期	2013
ISSN	19940416
卷号	7 期号:1
英文摘要	Numerical simulation of glacier dynamics in mountainous regions using zero-order, shallow ice models is desirable for computational efficiency so as to allow broad coverage. However, these models present several difficulties when applied to complex terrain. One such problem arises where steep terrain can spuriously lead to large ice fluxes that remove more mass from a grid cell than it originally contains, leading to mass conservation being violated. This paper describes a vertically integrated, shallow ice model using a second-order flux-limiting spatial discretization scheme that enforces mass conservation. An exact solution to ice flow over a bedrock step is derived for a given mass balance forcing as a benchmark to evaluate the model performance in such a difficult setting. This benchmark should serve as a useful test for modellers interested in simulating glaciers over complex terrain. © Author(s) 2013. CC Attribution 3.0 License.
学科领域	bedrock; complex terrain; glacier dynamics; ice flow; mass balance; mass transfer; mountain region; numerical model
语种	英语
scopus关键词	bedrock; complex terrain; glacier dynamics; ice flow; mass balance; mass transfer; mountain region; numerical model
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/120316
作者单位	Centre for Climate and Cryosphere, Institute of Meteorology and Geophysics, University of Innsbruck, Innsbruck, Austria; Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, Canada; Pacific Climate Impacts Consortium, University of Victoria, Victoria, Canada
推荐引用方式 GB/T 7714	Jarosch A.H.,Schoof C.G.,Anslow F.S.. Restoring mass conservation to shallow ice flow models over complex terrain[J],2013,7(1).
APA	Jarosch A.H.,Schoof C.G.,&Anslow F.S..(2013).Restoring mass conservation to shallow ice flow models over complex terrain.Cryosphere,7(1).
MLA	Jarosch A.H.,et al."Restoring mass conservation to shallow ice flow models over complex terrain".Cryosphere 7.1(2013).