SeisSol – A Software for Seismic Wave Propagation Simulations

Martin Käser (), Cristobal Castro, Verena Hermann and Christian Pelties
Additional contact information
Martin Käser: Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Geophysik
Cristobal Castro: Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Geophysik
Verena Hermann: Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Geophysik
Christian Pelties: Ludwig-Maximilians-Universität München, Department für Geo- und Umweltwissenschaften, Geophysik

A chapter in High Performance Computing in Science and Engineering, Garching/Munich 2009, 2010, pp 281-292 from Springer

Abstract: Abstract We present important extensions of the software SeisSol based on the arbitrary high-order Discontinuous Galerkin (DG) Finite-Element method to model seismic wave propagation using non-conforming hybrid meshes for model discretization and to account for highly heterogeneous material. In these new approaches we include a point-wise integration of numerical fluxes across element interfaces for the non-conforming boundaries preserving numerical accuracy while avoiding numerical artifacts due to the mesh coupling. We apply the proposed scheme to a scenario test case of the Grenoble valley to demonstrate the methods capability. Furthermore, we present the extension to space-variable coefficients to describe material variations inside each element using the same numerical approximation strategy as for the velocity-stress variables in the formulation of the wave equation. The combination of the DG method with a time integration scheme based on the solution of Arbitrary accuracy DErivatives Riemann problems (ADER) still provides an explicit, one-step scheme which achieves arbitrary high-order accuracy in space and time. We confirm the accuracy of the proposed scheme a numerical experiments considering randomly heterogeneous material and compare our results to independent reference solutions. Finally, we apply the scheme to an earthquake scenario considering the effect of a sedimentary basin and compare the efficiency of the classical global time stepping technique and the local time stepping for different partitioning strategies and show results for a strong scaling test.

Keywords: Ground Motion; Discontinuous Galerkin; Discontinuous Galerkin Method; Spectral Element Method; Seismic Wave Propagation (search for similar items in EconPapers)
Date: 2010
References: Add references at CitEc
Citations:

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-13872-0_24

Ordering information: This item can be ordered from
http://www.springer.com/9783642138720

DOI: 10.1007/978-3-642-13872-0_24

Access Statistics for this chapter

More chapters in Springer Books from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().