Uppsala University
Department of Information Technology
December 2006
Abstract:In this paper we compare two models to compute the isostatic response of the Earths lithosphere to an external load. The lithosphere is modeled as a linear elastic solid. The two models differ in the mathematical formulation of the problem, their applicability in the incompressible limit, the choice of the finite elements used for discretization, and the solution strategy for the arising algebraic problem. The efficiency and accuracy of both models are compared via extensive numerical experiments in 2D and 3D.
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