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ISMIP-HOM benchmark experiments using Underworld
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DOI：10.5194/gmd-15-8749-2022.png)
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摘要
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Numerical models have become an indispensable tool forunderstanding and predicting the flow of ice sheets and glaciers. Here wepresent the full-Stokes software package Underworld to the glaciologicalcommunity. The code is already well established in simulating complexgeodynamic systems. Advantages for glaciology are that it provides afull-Stokes solution for elastic-viscous-plastic materials and includesmechanical anisotropy. Underworld uses a material point method to track thefull history information of Lagrangian material points, of stratigraphiclayers and of free surfaces. We show that Underworld successfully reproducesthe results of other full-Stokes models for the benchmark experiments of the Ice Sheet Model Intercomparison Project for Higher-Order Models(ISMIP-HOM). Furthermore, we test finite-element meshes with differentgeometries and highlight the need to be able to adapt the finite-elementgrid to discontinuous interfaces between materials with strongly differentproperties, such as the ice-bedrock boundary.
Keyword:
POLAR ICE
DEFORMATION
ANISOTROPY
EVOLUTION
DYNAMICS
MODELS
SHEETS
CREEP
CRUST
期刊
IF:
4.9
论文数:
4.1K
被引数:
2.4W
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