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Statements

Subject Item
n2:RIV%2F67985530%3A_____%2F11%3A00371150%21RIV12-AV0-67985530
rdf:type
n14:Vysledek skos:Concept
dcterms:description
The standard anisotropic ray theory 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, where 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 reference ray. In this paper, we test two recently developed algorithms of the coupling ray theory. As a reference, we use the Fourier pseudo-spectral method, which does not suffer from limitations of the ray method and yields very accurate results. We study the behavior of shear waves in weakly anisotropic media as well as in the vicinity of intersection or conical singularity. The standard anisotropic ray theory 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, where 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 reference ray. In this paper, we test two recently developed algorithms of the coupling ray theory. As a reference, we use the Fourier pseudo-spectral method, which does not suffer from limitations of the ray method and yields very accurate results. We study the behavior of shear waves in weakly anisotropic media as well as in the vicinity of intersection or conical singularity.
dcterms:title
Comparison of the Anisotropic-common-ray approximation of the Coupling ray theory for S waves with Fourier pseudo-spectral method in weakly anisotropic models Comparison of the Anisotropic-common-ray approximation of the Coupling ray theory for S waves with Fourier pseudo-spectral method in weakly anisotropic models
skos:prefLabel
Comparison of the Anisotropic-common-ray approximation of the Coupling ray theory for S waves with Fourier pseudo-spectral method in weakly anisotropic models Comparison of the Anisotropic-common-ray approximation of the Coupling ray theory for S waves with Fourier pseudo-spectral method in weakly anisotropic models
skos:notation
RIV/67985530:_____/11:00371150!RIV12-AV0-67985530
n14:predkladatel
n18:ico%3A67985530
n3:aktivita
n8:P n8:Z
n3:aktivity
P(GAP210/11/0117), Z(AV0Z30120515)
n3:dodaniDat
n9:2012
n3:domaciTvurceVysledku
n12:7667485
n3:druhVysledku
n4:O
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
191249
n3:idVysledku
RIV/67985530:_____/11:00371150
n3:jazykVysledku
n15:eng
n3:klicovaSlova
seismic anisotropy; coupling ray theory; 3D models
n3:klicoveSlovo
n11:3D%20models n11:seismic%20anisotropy n11:coupling%20ray%20theory
n3:kontrolniKodProRIV
[56735E47AA5C]
n3:obor
n7:DC
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n16:GAP210%2F11%2F0117
n3:rokUplatneniVysledku
n9:2011
n3:tvurceVysledku
Bulant, P. Tessmer, E. Farra, V. Pšenčík, Ivan
n3:zamer
n17:AV0Z30120515