Seismic wave propagation and perfectly matched layers using a GFDM

Authors:
Francisco Ureña;Juan José Benito;Eduardo Salete;Luis Gavete
Affiliations:
Universidad de Castilla La Mancha, Spain;jbenito@ind.uned.es;esalete@ind.uned.es;lu.gavete@upm.es
Venue:
ICCSA'11 Proceedings of the 2011 international conference on Computational science and its applications - Volume Part III
Year:
2011

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Abstract

The interior of the Earth is heterogeneous with different material and may have complex geometry. The free surface can also be uneven. Therefore, the use of a meshless method with the possibility of using and irregular grid-point distribution can be interest for modeling this kind of problem. This paper shows the application of GFDM to the problem of seismic wave propagation in 2-D. To use this method in unbounded domains one must truncate the computational grid-point avoiding reflection from the edges. PML absorbing boundary condition has then been included in the numerical model proposed in this work.