1887

Abstract

Finite difference schemes on regular grids are efficient to accurately predict the seismic wave field, at least for smooth models. However, spurious diffractions become visible when the topography or internal interfaces do not align with the Cartesian grid. We propose to use the generalized finite difference scheme to propagate the wave field on unstructured meshes. We study the accuracy of the proposed solution on simple applications for the 2D acoustic constant density case and show that triangular meshes allow to reduce the imprint of diffractions.

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/content/papers/10.3997/2214-4609.20148878
2012-06-04
2024-03-29
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20148878
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