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Behaviour of rays at interfaces in anisotropic viscoelastic media
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SYSNO ASEP 0348406 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Behaviour of rays at interfaces in anisotropic viscoelastic media Tvůrce(i) Vavryčuk, Václav (GFU-E) ORCID, RID Zdroj.dok. Geophysical Journal International - ISSN 0956-540X
Roč. 181, č. 3 (2010), s. 1665-1677Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova seismic anisotropy ; seismic attenuation ; wave propagation Vědní obor RIV DC - Seismologie, vulkanologie a struktura Země CEP IAA300120801 GA AV ČR - Akademie věd CEZ AV0Z30120515 - GFU-E (2005-2011) UT WOS 000277716400033 DOI 10.1111j.1365-246X.2010.04583.x Anotace 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. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2011
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