Caustics in qSV Rayfields of Transversely Isotropic and Vertically Inhomogeneous Media
Andrzej Hanyga, M. A. Slawinski, 2001. "Caustics in qSV Rayfields of Transversely Isotropic and Vertically Inhomogeneous Media", Anisotropy 2000: Fractures, Converted Waves, and Case Studies, L. Ikelle, A. Gangi
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The morphology of rays and wavefronts generated by a point source in a vertically heterogeneous TI elastic medium is studied. The qSV rays form two conoidal caustics with vertices at the source. A generic ray touches 0, 1 or both caustics successively. In the latter case the KMAH indices cancel. The sum of the initial phase and the phase shifts at caustics along each ray outside the caustics is 0. In the region between the caustics, the phase shifts are 0, 0 and π/2.
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Anisotropy 2000: Fractures, Converted Waves, and Case Studies
“This volume contains 25 papers that represent most of the best work in seismic anisotropy in 1998 and 1999. Fracture characterizations and processing of converted waves are the two main topics covered in this volume. They are addressed from both theoretical and practical viewpoints. Also included are papers describing the historical roots of seismic anisotropy.”