Shear-wave coupling in inhomogeneous weakly anisotropic media

0335415 - GFÚ 2010 RIV BR eng C - Conference Paper (international conference)
Pšenčík, Ivan - Farra, V.
Shear-wave coupling in inhomogeneous weakly anisotropic media.
Expanded abstracts of the11th International Congress of the Brazilian Geophysical Society and EXPOGEF 2009. Salvador: SBGf, 2009, s. 1-4.
[[International Congress of the Brazilian Geophysical Society and EXPOGEF 2009 /11./. Salvador (BR), 24.08.2009-28.08.2009]
R&D Projects: GA ČR GA205/08/0332
Institutional research plan: CEZ:AV0Z30120515
Keywords : seismic anisotropy * shear-wave coupling * seismic rays
Subject RIV: DC - Siesmology, Volcanology, Earth Structure

We present an approximate procedure for computing coupled S waves in inhomogeneous weakly anisotropic media. The procedure can be used to compute S waves propagating in smooth inhomogeneous isotropic or anisotropic media. In anisotropic media, it can describe behaviour of coupled as well as decoupled S waves. Basic part of the procedure is an approximate computation of the common S-wave ray, a trajectory, along which properties of both S waves propagating in anisotropic media are computed. For computation of the common ray and of the approximate geometrical spreading along it, we use the first-order ray tracing and dynamic ray tracing concept, developed for computations of P waves in inhomogeneous weakly anisotropic media.
Permanent Link: http://hdl.handle.net/11104/0179887