期刊
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
卷 117, 期 -, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2011JF001962
关键词
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资金
- U.S. DOE Office of Science [DE-FG02-07ER64431, DE-FG02-07ER64432, DOE 07SCPF152]
- U.S. National Science Foundation [DMS-0913491]
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [0913491] Funding Source: National Science Foundation
The numerical modeling of glacier and ice sheet evolution is a subject of growing interest, in part because of the potential for models to inform estimates of global sea level change. This paper focuses on the development of a numerical model that determines the velocity and pressure fields within an ice sheet. Our numerical model features a high-fidelity mathematical model involving the nonlinear Stokes system and combinations of no-sliding and sliding basal boundary conditions, high-order accurate finite element discretizations based on variable resolution grids, and highly scalable parallel solution strategies, all of which contribute to a numerical model that can achieve accurate velocity and pressure approximations in a highly efficient manner. We demonstrate the accuracy and efficiency of our model by analytical solution tests, established ice sheet benchmark experiments, and comparisons with other well-established ice sheet models.
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