Počet záznamů: 1

Behaviour of rays at interfaces in anisotropic viscoelastic media

  1. 1.
    0348406 - GFU-E 2011 RIV GB eng J - Článek v odborném periodiku
    Vavryčuk, Václav
    Behaviour of rays at interfaces in anisotropic viscoelastic media.
    Geophysical Journal International. Roč. 181, č. 3 (2010), s. 1665-1677 ISSN 0956-540X
    Grant CEP: GA AV ČR IAA300120801
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: seismic anisotropy * seismic attenuation * wave propagation
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 2.411, rok: 2010

    The behaviour of rays at interfaces in anisotropic viscoelastic media is studied using three different approaches: the real elastic ray theory, the real viscoelastic ray theory and the complex ray theory. In solving the complex eikonal equation, the highest accuracy is achieved by the complex ray theory. The real elastic and viscoelastic ray theories are less accurate but computationally more effective. In all three approaches, the rays obey Snell's law at the interface, but its form is different for each approach. The complex Snell's law constrains the complex tangential components of the slowness vector. The real viscoelastic and elastic Snell's laws constrain the real tangential components of the slowness vector. In the viscoelastic ray theory, the Snell's law is supplemented by the condition of the stationary slowness vector of scattered waves.
    Trvalý link: http://hdl.handle.net/11104/0188953