Computational method for exact frequency-dependent rays on the basis of the solution of the Helmholtz equation

M. Protasov, K. Gadylshin

Результат исследования: Научные публикации в периодических изданияхстатья

1 Цитирования (Scopus)

Аннотация

A numerical method is proposed for the calculation of exact frequency-dependent rays when the solution of the Helmholtz equation is known. The properties of frequency-dependent rays are analysed and compared with classical ray theory and with the method of finite-difference modelling for the first time. In this paper, we study the dependence of these rays on the frequency of signals and show the convergence of the exact rays to the classical rays with increasing frequency. A number of numerical experiments demonstrate the distinctive features of exact frequency-dependent rays, in particular, their ability to penetrate into shadow zones that are impenetrable for classical rays.

Язык оригиналаанглийский
Страницы (с-по)525-533
Число страниц9
ЖурналGeophysical Journal International
Том210
Номер выпуска1
DOI
СостояниеОпубликовано - 1 июл 2017

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