Podrobnosti záznamu

Název
    Comparison of the anisotropic-common-ray approximation of the coupling ray theory for S waves with the Fourier pseudo-spectral method in weakly anisotropic models
Autor
    Bulant, P.
    Farra, V.
    Pšenčík, Ivan
    Tessmer, E.
Jazyk
    anglicky
Typ dokumentu
    část monografie (kapitola)
Zdrojový dokument - monografie
    Seismic waves in complex 3-D structures. Report 21
Strany
    S. 167-183
Poznámky
    Projekt: GAP210/11/0117, GA ČR, CZ3cav_un_auth*0273502
    Rozsah: 17 s.9209
    Výzkumný záměr: CEZ:AV0Z30120515
Předmětová kategorie
    common-ray approximation
    coupling ray theory
    ray tracing
    weak anisotropy
Klíčové slovo
    Anisotropic
    Anisotropic-common-ray
    Approximation
    Comparison
    Coupling
    Fourier
    Method
    Models
    Pseudo-spectral
    Ray
    Theory
    Waves
    Weakly
Abstrakt (anglicky)
   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 methods and yields very accurate results.
Přispěvatel
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
    U
Datum importu
    9. 12. 2013