Podrobnosti záznamu

    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
    Bulant, P.
    Farra, V.
    Pšenčík, Ivan
    Tessmer, E.
Typ dokumentu
    část monografie (kapitola)
Zdrojový dokument - monografie
    Seismic waves in complex 3-D structures. Report 21
    S. 167-183
    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
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.
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
Datum importu
    9. 12. 2013