Session III:
Physically-based simulation of earthquike generation and the earthquake cycle

2nd ACES (APEC Cooperation for Earthquake Simulation) Workshop in Japan



Mantle convection models with viscoelastic, brittle lithosphere: numerical methodology and plate tectonic modeling.
Louis Moresi, Hans Muhlhaus, Frederic Dufour


Abstract

The Earth's tectonic plates are strong, viscoelastic shells which make up the outermost part of a thermally convecting, predominantly viscous layer. In order to build a more realistic simulation of the planet's evolution, the complete viscoelastic convection system ought to be included. A particle-in-cell finite element method is demonstrated which can simulate very large deformation viscoelasticity. This is applied to a plate-deformation problem. Numerical accuracy is demonstrated relative to analytic benchmarks, and the characteristics of the method are discussed.

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