2‐D, frequency‐domain waveform inversion of coupled acoustic‐elastic media with an irregular interface

PreviousNext No AccessSEG Technical Program Expanded Abstracts 20082‐D, frequency‐domain waveform inversion of coupled acoustic‐elastic media with an irregular interfaceAuthors: Myung Hoon KimYoonseok ChoiYoung Ho ChaChangsoo ShinMyung Hoon KimSeoul National UniversitySearch for more papers by this author, Yoonseok ChoiSeoul National UniversitySearch for more papers by this author, Young Ho ChaSeoul National UniversitySearch for more papers by this author, and Changsoo ShinSeoul National UniversitySearch for more papers by this authorhttps://doi.org/10.1190/1.3059276 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Most seismic exploration is carried out at sea, where the acoustic layer (water) covers an elastic layer (solids). The resulting data contains many elastic signals. As the sea bottom is usually not flat, inversion algorithms for a marine environment must be capable of dealing with an irregular interface between the fluid and solid layers. We have developed a conventional frequency‐domain modeling algorithm for coupled media with an irregular interface, as well as the corresponding waveform inversion algorithm. The interface is represented by tessellating square and triangular finite elements. We exploit the usual backpropagation algorithm for inversion in the frequency domain, using the pseudo‐Hessian matrix to normalize the gradient. Numerical experiments on synthetic models show that our algorithm can be applied successfully to both marine exploration data and OBC data.Permalink: https://doi.org/10.1190/1.3059276FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2008ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2008 Pages: 3713 publication data© 2008 Copyright © 2008 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 15 Dec 2008 CITATION INFORMATION Myung Hoon Kim, Yoonseok Choi, Young Ho Cha, and Changsoo Shin, (2008), "2‐D, frequency‐domain waveform inversion of coupled acoustic‐elastic media with an irregular interface," SEG Technical Program Expanded Abstracts : 1935-1939. https://doi.org/10.1190/1.3059276 Plain-Language Summary PDF DownloadLoading ...