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https://doi.org/10.5194/egusphere-2022-492
https://doi.org/10.5194/egusphere-2022-492
16 Jun 2022
 | 16 Jun 2022

ISMIP-HOM benchmark experiments using Underworld

Till Sachau, Haibin Yang, Justin Lang, Paul D. Bons, and Louis Moresi

Abstract. Numerical models have become an indispensable tool for understanding and predicting the flow of ice sheets and glaciers. Here we present the full-Stokes software package Underworld to the glaciological community. The code is already well established in simulating complex geodynamic systems. Advantages for glaciology are that it provides a full-Stokes solution for elasto-visco-plastic materials and includes mechanical anisotropy. Underworld uses a material point method to track the full history information of Lagrangian material points, of stratigraphic layers and of free surfaces. We show that Underworld successfully reproduces the results of other full-Stokes models for the benchmark experiments of the ISMIP-HOM project. Furthermore, we test FE meshes with different geometries and highlight the need to be able to adapt the finite-element grid to discontinuous interfaces between materials with strongly different properties, such as the ice-bedrock boundary.

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Journal article(s) based on this preprint

02 Dec 2022
ISMIP-HOM benchmark experiments using Underworld
Till Sachau, Haibin Yang, Justin Lang, Paul D. Bons, and Louis Moresi
Geosci. Model Dev., 15, 8749–8764, https://doi.org/10.5194/gmd-15-8749-2022,https://doi.org/10.5194/gmd-15-8749-2022, 2022
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Knowledge of the internal structures of the major continental ice sheets is improving, thanks to...
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