Two-dimensional multivalued traveltime and amplitude maps by uniform sampling of a ray field

An algorithm for computing multivalued maps for traveltime, amplitude or any other ray-related variable is presented. It is based on a wavefront construction method, where the ray field is decomposed into elementary cells defined by adjacent rays and wavefronts. A sampling criterion for ray density...

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Bibliographic Details
Published inGeophysical journal international Vol. 125; no. 2; pp. 584 - 598
Main Authors Lambaré, G., Lucio, P. S., Hanyga, A.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.05.1996
Subjects
Green's functions
numerical techniques
ray theory
ray tracing
traveltime
wave propagation
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Summary:An algorithm for computing multivalued maps for traveltime, amplitude or any other ray-related variable is presented. It is based on a wavefront construction method, where the ray field is decomposed into elementary cells defined by adjacent rays and wavefronts. A sampling criterion for ray density in the phase space is suggested. It is demonstrated that this new criterion ensures uniform ray density over the entire ray field including caustics. the method is applied to complex models.
Bibliography:istex:4D0375B90ACECF27247DBA57867AB1604B608549
ark:/67375/HXZ-L79SS40N-K
ISSN:0956-540X
1365-246X
DOI:10.1111/j.1365-246X.1996.tb00021.x