气候变化领域集成服务门户(CCPortal): Models for polythermal ice sheets and glaciers

CCPortal

DOI	10.5194/tc-11-541-2017
	Models for polythermal ice sheets and glaciers
	Hewitt I.J.; Schoof C.
发表日期	2017
ISSN	19940416
卷号	11 期号:1
英文摘要	Polythermal ice sheets and glaciers contain both cold ice and temperate ice. We present two new models to describe the temperature and water content of such ice masses, accounting for the possibility of gravity-and pressure-driven water drainage according to Darcy's law. Both models are based on the principle of energy conservation; one additionally invokes the theory of viscous compaction to calculate pore water pressure, and the other involves a modification of existing enthalpy gradient methods to include gravity-driven drainage. The models self-consistently predict the evolution of temperature in cold ice and of water content in temperate ice. Numerical solutions are described, and a number of illustrative test problems are presented, allowing comparison with existing methods. The suggested models are simple enough to be incorporated in existing ice-sheet models with little modification. © 2017 Author(s).
学科领域	compaction; Darcy law; drainage water; enthalpy; glacier; ice core; ice sheet; numerical model; porewater; temperate environment; temperature effect; water content
语种	英语
scopus关键词	compaction; Darcy law; drainage water; enthalpy; glacier; ice core; ice sheet; numerical model; porewater; temperate environment; temperature effect; water content
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/119438
作者单位	University of Oxford, Oxford, United Kingdom; University of British ColumbiaBC, Canada
推荐引用方式 GB/T 7714	Hewitt I.J.,Schoof C.. Models for polythermal ice sheets and glaciers[J],2017,11(1).
APA	Hewitt I.J.,&Schoof C..(2017).Models for polythermal ice sheets and glaciers.Cryosphere,11(1).
MLA	Hewitt I.J.,et al."Models for polythermal ice sheets and glaciers".Cryosphere 11.1(2017).