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• W4291753112 abstract "PreviousNext No AccessSecond International Meeting for Applied Geoscience & EnergyRobust localized adaptive waveform inversion: A new regularization for Gabor deconvolutionAuthors: Peng YongRomain BrossierLudovic MétivierPeng YongUniversity Grenoble AlpesSearch for more papers by this author, Romain BrossierUniversity Grenoble AlpesSearch for more papers by this author, and Ludovic MétivierUniversity Grenoble AlpesSearch for more papers by this authorhttps://doi.org/10.1190/image2022-3745694.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractRecently, we have developed a localized adaptive waveform inversion method (LAWI) to tackle the cycle-skipping issue in velocity reconstruction by waveform inversion. In LAWI, the Gabor deconvolution is applied to compute a local matching filter, whose centroid time is used for measuring the instantaneous time shift between observed and calculated data. Different from AWI which is based on a stationary convolutional model, LAWI can take the non-stationarity nature of seismic data into account, therefore performing better in handling realistic cycle skipping problems. Numerical tests show that, compared with AWI, the application of LAWI seems to require a higher signal-to- noise ratio (SNR) of observed data. To make LAWI work for low-SNR data, a delta-type regularization is developed to deal with the noise problems inherent in the Gabor deconvolution. Despite a slight resolution loss and a “layer-stripping principle break” induced by this new regularization illustrated numerically, we present how this method can be useful to invert low-SNR data on the Chevron benchmark dataset.Keywords: localized adaptive , wavefrom inversion, Gabor deconvolution, regularization, local minimaPermalink: https://doi.org/10.1190/image2022-3745694.1FiguresReferencesRelatedDetails Second International Meeting for Applied Geoscience & EnergyISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2022 Pages: 3694 publication data© 2022 Published in electronic format with permission by the Society of Exploration Geophysicists and the American Association of Petroleum GeologistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 15 Aug 2022 CITATION INFORMATION Peng Yong, Romain Brossier, and Ludovic Métivier, (2022), Robust localized adaptive waveform inversion: A new regularization for Gabor deconvolution, SEG Technical Program Expanded Abstracts : 972-976. https://doi.org/10.1190/image2022-3745694.1 Plain-Language Summary Keywordslocalized adaptive wavefrom inversionGabor deconvolutionregularizationlocal minimaPDF DownloadLoading ..." @default.
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