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Comparison of the FORT approximation of the coupling ray theory with the Fourier pseudospectral method
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SYSNO ASEP 0365261 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Comparison of the FORT approximation of the coupling ray theory with the Fourier pseudospectral method Author(s) Pšenčík, Ivan (GFU-E) ORCID, RID
Farra, V. (FR)
Tessmer, E. (DE)Source Title Studia geophysica et geodaetica. - : Geofyzikální ústav AV ČR, v. v. i. - ISSN 0039-3169
Roč. 56, č. 1 (2012), s. 35-64Number of pages 30 s. Publication form Print - P Language eng - English Country CZ - Czech Republic Keywords coupling ray theory ; Fourier pseudospectral method ; first-order ray tracing Subject RIV DC - Siesmology, Volcanology, Earth Structure R&D Projects GAP210/11/0117 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z30120515 - GFU-E (2005-2011) UT WOS 000301037400004 DOI 10.1007/s11200-010-0086-7 Annotation The standard ray theory (RT) for inhomogeneous anisotropic media does not work properly or even fails when applied to S-wave propagation in inhomogeneous weakly anisotropic media or in the vicinity of shear-wave singularities. In both cases, the two shear waves propagate with similar phase velocities. The coupling ray theory was proposed to avoid this problem. In it, amplitudes of the two S waves are computed by solving two coupled, frequency-dependent differential equations along a common S-wave ray. In this paper, we test the recently developed approximation of coupling ray theory (CRT) based on the common S-wave rays obtained by first-order ray tracing (FORT). Workplace Geophysical Institute Contact Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Year of Publishing 2013
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