Verification of an ADER-DG method for complex dynamic rupture problems

摘要

We present results of thorough benchmarking of an arbitrary high-orderderivative discontinuous Galerkin (ADER-DG) method on unstructured meshes foradvanced earthquake dynamic rupture problems. We verify the method bycomparison to well-established numerical methods in a series of verificationexercises, including dipping and branching fault geometries, heterogeneousinitial conditions, bimaterial interfaces and several rate-and-state frictionlaws. We show that the combination of meshing flexibility and high-orderaccuracy of the ADER-DG method makes it a competitive tool to studyearthquake dynamics in geometrically complicated setups.