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- W2322391776 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2011Hybrid waveform inversion technique for coupled acoustic‐elastic mediaAuthors: Seung‐Goo KangHo Seuk BaeChangsoo ShinSeung‐Goo KangShin's GeophysicsSearch for more papers by this author, Ho Seuk BaeShin's GeophysicsSearch for more papers by this author, and Changsoo ShinShin's GeophysicsSearch for more papers by this authorhttps://doi.org/10.1190/1.3627749 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Most full waveform inversion algorithms have been developed assuming that the governing equation of the wave‐propagation phenomenon is the acoustic wave equation. However, the majority of geophysical targets are generally situated in elastic media. For this reason, waveform inversion using an acoustic wave equation has its limitations with regard to building submarine geophysical features. Accordingly, we have proposed a full waveform inversion algorithm for coupled acoustic‐elastic media with irregular submarine topography that is comparable to submarine geology systems. We developed a hybrid (Laplace‐Fourier domain) waveform inversion technique that uses both frequency‐ and Laplace‐domain wavefields properly. The frequency‐domain wavefield has a short‐wavelength component which can describe detailed velocity models. On the other hand, the employed Laplace coefficients have a long‐wavelength component which can describe macro velocity structures. In addition, we proposed a strategy for selecting frequency bands, comprising selected real frequencies and Laplace coefficients. From numerical tests, using a synthetic model (2D AA profile of the SEG/EAGE salt model) and a field dataset (North‐East Atlantic), our new hybrid waveform inversion strategy provided much higher resolution images than conventional hybrid inversion schemes.Permalink: https://doi.org/10.1190/1.3627749FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2011ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2011 Pages: 4424 Publisher:Society of Exploration Geophysicists HistoryPublished: 08 Aug 2011 CITATION INFORMATION Seung‐Goo Kang, Ho Seuk Bae, and Changsoo Shin, (2011), Hybrid waveform inversion technique for coupled acoustic‐elastic media, SEG Technical Program Expanded Abstracts : 2679-2683. https://doi.org/10.1190/1.3627749 Plain-Language Summary PDF DownloadLoading ..." @default.
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