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- W2316545910 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2014An alternative to the O'Doherty-Anstey approximation in a high-contrast mediumAuthors: Renat Shigapov*Boris KashtanAlexander DroujinineWim MulderRenat Shigapov*Saint Petersburg State USearch for more papers by this author, Boris KashtanSaint Petersburg State USearch for more papers by this author, Alexander DroujinineShell Global Solutions International BVSearch for more papers by this author, and Wim MulderShell Global Solutions International BV and Delft U of TechnologySearch for more papers by this authorhttps://doi.org/10.1190/segam2014-0723.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The O'Doherty-Anstey (ODA) approximation assumes weak-contrast velocity variations. This is not valid for a fractured medium. We present an alternative approximation valid for fractured media with strong contrasts. With the Kennett-type recursive matrix method, we derive the ODA- and strong-reflectivity (SR) approximations in a layered medium. The resulting formulas are invariant with respect to the type of layer properties (acoustic, elastic, poroelastic, etc.). Numerical results obtained via the global matrix method confirm the accuracy of the SR-approximation in a high-contrast acoustic medium, whereas the classical ODA-formula leads to large errors. Keywords: attenuation, multiples, scattering, unconventional, QPermalink: https://doi.org/10.1190/segam2014-0723.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2014ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2014 Pages: 5183 publication data© 2014 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 05 Aug 2014 CITATION INFORMATION Renat Shigapov*, Boris Kashtan, Alexander Droujinine, and Wim Mulder, (2014), An alternative to the O'Doherty-Anstey approximation in a high-contrast medium, SEG Technical Program Expanded Abstracts : 4625-4631. https://doi.org/10.1190/segam2014-0723.1 Plain-Language Summary KeywordsattenuationmultiplesscatteringunconventionalQPDF DownloadLoading ..." @default.
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- W2316545910 title "An alternative to the O'Doherty-Anstey approximation in a high-contrast medium" @default.
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