Inhomogeneity in a real material may produce a seismic wavefield pattern qualitatively indistinguishable from one caused by anisotropy. However, the quantitative description of such a medium as an apparently anisotropic elastic solid may lead to geophysically invalid conclusions. Several numerical examples are presented for body and surface waves propagating through inhomogeneous isotropic elastic models.
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Levshin et al. (1984) studied this question.
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