Abstract

The problem of modeling wave propagation in media with solid and fluid regions has many applications in geophysics and engineering. We have performed a grid-dispersion analysis and numerical computations to compare the performance of the spectral-element method and several versions of the the finite-difference method in handling fluid-solid interfaces using a monolithic approach. We conclude that a first-order velocity stress formulation can be used in dealing with fluid-solid layers without using staggered grids necessarily.

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