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- W2331185975 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2013Stack-based full wavefield velocity tomographyAuthors: Side JinRené- Édouard PlessixSide JinShell International Exploration and ProductionSearch for more papers by this author and René- Édouard PlessixShell International Exploration and ProductionSearch for more papers by this authorhttps://doi.org/10.1190/segam2013-1027.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Conventional waveform velocity inversions based on waveform fitting are theoretically very attractive, but encounter severe practical difficulties due to the high non-linearity of the problem. We propose a full wave-field velocity tomography (FWT) that has a similar implementation as conventional waveform inversions, but does not need the waveform fitting between the field data and synthetic data, nor travel-time picking. The objective function of the inverse problem is defined as the stacking power of back propagated energy within a small volume centered at each shot location in a short time interval around shooting time. Stacking power mainly depends on the kinematics of the velocity model and thus our method should be less dependent on amplitudes than the conventional waveform inversions. Maximizing the stacking power can be achieved more reliably by gradient-based algorithms due to the reduced non-linearity. We derive the gradients using the adjoint-state method. A land data example is given to demonstrate the method. Permalink: https://doi.org/10.1190/segam2013-1027.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2013ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2013 Pages: 5258 Publisher:Society of Exploration Geophysicists HistoryPublished: 19 Aug 2013 CITATION INFORMATION Side Jin and René- Édouard Plessix, (2013), Stack-based full wavefield velocity tomography, SEG Technical Program Expanded Abstracts : 1095-1099. https://doi.org/10.1190/segam2013-1027.1 Plain-Language Summary PDF DownloadLoading ..." @default.
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- W2331185975 title "Stack-based full wavefield velocity tomography" @default.
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