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- W2328602877 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2011Comparison of irregular cartesian finite difference methods for acoustic RTMAuthors: Anne‐Cecile LesageJosep de la PuenteJose M. CelaMauricio Araya‐PoloGladys GonzalezAnne‐Cecile LesageHeadwave Inc.Search for more papers by this author, Josep de la PuenteBarcelona Supercomputing CenterSearch for more papers by this author, Jose M. CelaBarcelona Supercomputing CenterSearch for more papers by this author, Mauricio Araya‐PoloRepsol.Search for more papers by this author, and Gladys GonzalezRepsol.Search for more papers by this authorhttps://doi.org/10.1190/1.3627785 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract We compare three Irregular Cartesian Finite Difference (ICFD) methods towards deployment into Forward Modeling and RTM. The ICFD methods considered are based on: Forn‐berg (1988), Gamet et al. (1999) and Pitarka et al. (1999). These methods consist of providing a two‐way acoustic wave propagation adapted to the P‐wave velocity field. While respecting stability and low numerical dispersion criteria, they avoid the spatial oversampling introduced by a uniform spacing. Thus they reduce in a significant manner the required computer memory and execution time. We show in examples that ICFD methods allow to obtain results as accurate as high‐order Regular Cartesian Finite Difference methods. Also, we evaluate the accuracy and the performance of the non‐uniform stencil computation for each of the three ICFD methods. Finally, we validate that ICFD methods provide significant speed‐up for FD propagators‐based applications.Permalink: https://doi.org/10.1190/1.3627785FiguresReferencesRelatedDetails 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 Anne‐Cecile Lesage, Josep de la Puente, Jose M. Cela, Mauricio Araya‐Polo, and Gladys Gonzalez, (2011), Comparison of irregular cartesian finite difference methods for acoustic RTM, SEG Technical Program Expanded Abstracts : 2845-2849. https://doi.org/10.1190/1.3627785 Plain-Language Summary PDF DownloadLoading ..." @default.
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- W2328602877 title "Comparison of irregular cartesian finite difference methods for acoustic RTM" @default.
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