On numerically solving the complex eikonal equation using real ray-tracing methods: A comparison with the exact analytical solution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F12%3A00377798" target="_blank" >RIV/67985530:_____/12:00377798 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1190/GEO2011-0431.1" target="_blank" >http://dx.doi.org/10.1190/GEO2011-0431.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1190/GEO2011-0431.1" target="_blank" >10.1190/GEO2011-0431.1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On numerically solving the complex eikonal equation using real ray-tracing methods: A comparison with the exact analytical solution

Popis výsledku v původním jazyce

The exact analytical solution of the complex eikonal equation describing P- and S-waves radiated by a point source situated in a simple type of isotropic viscoelastic medium was ascertained. The velocity-attenuation model is smoothly inhomogeneous with aconstant gradient of the square of the complex slowness. The resultant traveltime is complex; its real part describes the wave propagation and its imaginary part describes the attenuation effects. The solution was further used as a reference solution for numerical tests of the accuracy and robustness of two approximate ray-tracing approaches solving the complex eikonal equation: real elastic ray tracing and real viscoelastic ray tracing. Numerical modeling revealed that the real viscoelastic ray tracing method is unequivocally preferable to elastic ray tracing. It is more accurate and works even in situations when the elastic ray tracing fails. Also, the ray fields calculated by the real viscoelastic ray tracing are excellently reprodu

Název v anglickém jazyce

On numerically solving the complex eikonal equation using real ray-tracing methods: A comparison with the exact analytical solution

Popis výsledku anglicky

The exact analytical solution of the complex eikonal equation describing P- and S-waves radiated by a point source situated in a simple type of isotropic viscoelastic medium was ascertained. The velocity-attenuation model is smoothly inhomogeneous with aconstant gradient of the square of the complex slowness. The resultant traveltime is complex; its real part describes the wave propagation and its imaginary part describes the attenuation effects. The solution was further used as a reference solution for numerical tests of the accuracy and robustness of two approximate ray-tracing approaches solving the complex eikonal equation: real elastic ray tracing and real viscoelastic ray tracing. Numerical modeling revealed that the real viscoelastic ray tracing method is unequivocally preferable to elastic ray tracing. It is more accurate and works even in situations when the elastic ray tracing fails. Also, the ray fields calculated by the real viscoelastic ray tracing are excellently reprodu

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

<a href="/cs/project/IAA300120801" target="_blank" >IAA300120801: Seismické vlny a seismické zdroje v anizotropních prostředích II</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysics

ISSN

0016-8033

e-ISSN

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Svazek periodika

77

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"T109"-"T116"

Kód UT WoS článku

000307799800041

EID výsledku v databázi Scopus

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