Surface Waves in Vertically Heterogeneous and Transversely Isotropic Layer Overlying a Homogeneous Isotropic Half-Space and under a Uniform Layer of Liquid.

Abstract

The effect of heterogeneity and anisotropy on the dispersion of Rayleigh-type surface waves in a heterogeneous anisotropic layer of elastic medium overlying a homogeneous elastic solid half-space and lying under a homogeneous liquid layer of uniform depth is discussed. The variation of phase velocity with the wavenumber is obtained numerically for the fundamental mode. The results are compared with the homogeneous case. The results show that the heterogeneity of the layer decreases the phase velocity for small values of wavenumber. The problem of Gogna (1979) has been reduced as a special case.