3D SEISMIC MODELLING OF EDGE DIFFRACTIONS1

Autor:	H. M. Pedersen, L.-J. Gelius, J. J. Stamnes
Rok vydání:	1989
Předmět:	Diffraction Kirchhoff theory business.industry Computation Mathematical analysis Boundary values Kirchhoff's diffraction formula Ray tracing (physics) Geophysics Optics Software Geochemistry and Petrology business SIMPLE algorithm Geology
Zdroj:	Geophysical Prospecting. 37:639-646
ISSN:	1365-2478 0016-8025
Popis:	An accurate, fast, and simple algorithm for 3D modelling of seismic edge diffractions is presented. It is based on a generalized Kirchhoff theory that applies also to inhomogeneous (non-uniform) media. Both the boundary values and the Green functions in the Kirchhoff diffraction integral are determined by dynamic ray tracing, and each ray event is treated separately to obtain a description with clear physical interpretation. For each event the resulting Kirchhoff diffraction integral is evaluated by means of a uniform asymptotic technique that remains valid for receiver points near shadow boundaries. Since all parameters needed in the computations are obtained from dynamic ray tracing, the algorithm can readily be incorporated in existing software packages for 3D seismic ray modelling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46569e124fbf5bb3c7c79ec46e143baa https://doi.org/10.1111/j.1365-2478.1989.tb02227.x Zobrazit plný text záznamu Plný text