Common-ray tracing and dynamic ray tracing for S waves in a smooth elastic anisotropic medium |
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| Authors: | L Klime? |
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| Institution: | (1) Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Praha 2, Czech Republic |
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| Abstract: | Anisotropic common S-wave rays are traced using the averaged Hamiltonian of both S-wave polarizations. They represent very
practical reference rays for calculating S waves by means of the coupling ray theory. They eliminate problems with anisotropic-ray-theory
ray tracing through some S-wave slowness-surface singularities and also considerably simplify the numerical algorithm of the
coupling ray theory for S waves.
The equations required for anisotropic-common-ray tracing for S waves in a smooth elastic anisotropic medium, and for corresponding
dynamic ray tracing in Cartesian or ray-centred coordinates, are presented. The equations, for the most part generally known,
are summarized in a form which represents a complete algorithm suitable for coding and numerical applications. |
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| Keywords: | travel time ray tracing dynamic ray tracing geometrical spreading S waves coupling ray theory seismic anisotropy heterogeneous media |
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