A GFDM with PML for seismic wave equations in heterogeneous media

• Autores: J. J. Benito, F. Ureña, Luis Antonio Gavete Corvinos , E. Salete, A. Muelas
• Localización: Journal of computational and applied mathematics, ISSN 0377-0427, Vol. 252, Nº 1, 2013, págs. 40-51
• Idioma: inglés
• DOI: 10.1016/j.cam.2012.08.007
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• Resumen

  • The interior of the Earth is heterogeneous with different materials and may have complex geometry. The free surface can also be uneven. Therefore, the use of a meshless method ��with the possibility of using an irregular grid-point distribution�� can be of interest for modelling 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.