1887

Abstract

Summary

We present an original algorithm for numerical simulation of seismic wave propagation in models with complex topography along a free surface and other near-surface complexities. Conventional methods such as finite-difference seismic modeling either generate many artifacts or require an extremely fine discretization grid that is computationally expensive. The new approach combines discontinuous Galerkin in the complex near-surface part of the model with conventional rectangular finite-difference modeling for the deeper, less complex part. Using a triangular mesh in the near surface allows more accurate description of topography without artifacts or excessive discretization, while additional computation costs are minimized by only applying it to shallow portions of the subsurface models.

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/content/papers/10.3997/2214-4609.20141189
2014-06-16
2024-03-28
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References

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