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- W2332387071 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2009Angle gathers in wave‐equation imaging for VTI mediaAuthors: Tariq AlkhalifahSergey FomelTariq AlkhalifahKACSTSearch for more papers by this author and Sergey FomelThe University of Texas at AustinSearch for more papers by this authorhttps://doi.org/10.1190/1.3255453 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Angles in common‐image angle‐domain gathers refer to the scattering angle at the reflector and provide a natural access to analyzing migration velocities and amplitudes. In the case of anisotropic media, the importance of angle gathers is enhanced by the need to properly estimate multiple anisotropic parameters for a proper representation of the medium. We extract angle gathers for each downward‐continuation step from converting offset‐space‐frequency planes into angle‐space planes simultaneously with applying the imaging condition in a transversely isotropic (VTI) medium. The analytic equations, though cumbersome, are exact within the framework of the acoustic approximation. They are also easily programmable and show that angle gather mapping in the case anisotropic media differs from its isotropic counterpart, difference depending mainly on the strength of anisotropy.Permalink: https://doi.org/10.1190/1.3255453FiguresReferencesRelatedDetailsCited ByAnisotropic modeling and imagingSeismic Wave Simulation Using a TTI Pseudo-acoustic Wave Equation24 January 2017Theory of 3-D angle gathers in wave-equation seismic imaging22 February 2011 | Journal of Petroleum Exploration and Production Technology, Vol. 1, No. 13D angle gathers from reverse time migrationSheng Xu, Yu Zhang, and Bing Tang10 March 2011 | GEOPHYSICS, Vol. 76, No. 2A transversely isotropic medium with a tilted symmetry axis normal to the reflectorTariq Alkhalifah and Paul Sava26 May 2010 | GEOPHYSICS, Vol. 75, No. 3 SEG Technical Program Expanded Abstracts 2009ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2009 Pages: 4338 publication data© 2009 Copyright © 2009 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 14 Oct 2009 CITATION INFORMATION Tariq Alkhalifah and Sergey Fomel, (2009), Angle gathers in wave‐equation imaging for VTI media, SEG Technical Program Expanded Abstracts : 2899-2903. https://doi.org/10.1190/1.3255453 Plain-Language Summary PDF DownloadLoading ..." @default.
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