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Book Chapter

Caustics in qSV Rayfields of Transversely Isotropic and Vertically Inhomogeneous Media

By
Andrzej Hanyga
Andrzej Hanyga
*
Institute of Solid Earth Physics, University of Bergen,
N5007 Allegaten 41, Norway.
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M. A. Slawinski
M. A. Slawinski
*
Institute of Solid Earth Physics, University of Bergen,
N5007 Allegaten 41, Norway.
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Published:
January 01, 2001

Abstract

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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Contents

Society of Exploration Geophysicists Open File

Anisotropy 2000: Fractures, Converted Waves, and Case Studies

L. Ikelle
L. Ikelle
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A. Gangi
A. Gangi
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Society of Exploration Geophysicists
Volume
6
ISBN electronic:
9781560801771
Publication date:
January 01, 2001

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