We show the behaviour of the anisotropic-ray-theory S-wave rays in a velocity model with a split intersection singularity. The rays crossing the split intersection singularity are smoothly but very sharply bent. We demonstrate the abrupt changes of geometrical spreading and wavefront curvature of the faster anisotropic-ray-theory S wave. We also demonstrate the formation of caustics and wavefront triplication of the slower anisotropic-ray-theory S wave.
Wave propagation, elastic anisotropy, heterogeneous media, anisotropic ray theory, ray tracing, S-wave singularities.
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