HR: 1340h
AN: S13A-0186    [Abstracts]
TI: Incorporation of Viscoelasticity in ADER-DG Schemes for Seismic Wave Propagation
AU: * de la Puente, J
EM: jdelapuente@geophysik.uni-muenchen.de
AF: Department fuer Geo- und Umweltwissenschaften, LMU, Theresienstr. 41, Munich, 80333 Germany
AU: Kaeser, M A
EM: martin.kaeser@ing.unitn.it
AF: DICA University of Trento, Via Mesiano 77, Italy, 38050 Italy
AU: Stupazzini, M
EM: stupa@geophysiki.uni-muenchen.de
AF: Department fuer Geo- und Umweltwissenschaften, LMU, Theresienstr. 41, Munich, 80333 Germany
AU: Igel, H
EM: igel@geophysik.uni-muenchen.de
AF: Department fuer Geo- und Umweltwissenschaften, LMU, Theresienstr. 41, Munich, 80333 Germany
AB: The ADER Dicontinuous Galerkin (ADER-DG) schemes have been recently introduced as a new method for solving the elastic wave equation. This method has proved to have fully scalable accuracy and various features regarding propagation of seismic waves, such as incorporation of sources and various boudary conditions, have been successfully implemented as well. Furthermore, the use of triangles and tetrahedra as space discretizating cells makes it very flexible in terms of handling complex geometries and heterogeneity distributions. However the effects of attenuation of the waves were not included in the scheme yet. We present a method for incorporating viscoelasticity in the ADER-DG method based on the generalized Maxwell body rheology which is able to hadle with any dependency of the quality factor with frequency. To prove the validity of our implementation we provide a range of comparisons with various analytical solutions for the case of simplified models. Finally we will provide a comparison with the spectral element method for a more complex and realistic case.
DE: 7290 Computational seismology
SC: Seismology [S]
MN: Fall Meeting 2005