THE SINGULARITY ON THE PLANE LIDS OF THE WAVE SURFACE OF ELASTIC MEDIA WITH CUBIC SYMMETRY

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Abstract
The Green's function for homogeneous anisotropic elastic media can be expressed as an integral over the slowness surface S (1). For fixed position the singularities of the Green's function as a function of time arise as contributions to the integral from arbitrarily small neighbourhoods of certain usually isolated points on S, and the nature of the surface near these points determines the kind of singularity.