Wave equation angle domain common image gather asymptotic analysis

Abstract

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2013Wave equation angle domain common image gather asymptotic analysisAuthors: J. P. MontelG. LambaréJ. P. MontelCGGSearch for more papers by this author and G. LambaréCGGSearch for more papers by this authorhttps://doi.org/10.1190/segam2013-0514.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The increasing usage of wave equation and reverse time migration has motivated investigations on new types of common images gathers. Several types of angle domain common image gathers have then been proposed. While they should have the same aspect (up to specific artefacts) when the exact velocity model is used it appears that they exhibit significant differences in curvature when the velocity model is erroneous. This observation is analysed here by a theoretical analysis on ADCIGs computed by wave equation in the frame of high frequency asymptotics. This analysis is performed for slant stacked horizontal subsurface offset gather giving angle domain common image gathers and compared to previous results. We will put in evidence the differences between ADCIGs computed by other method and give the theoretical weapons to understand and deal correctly with the kinematic information contained in these gathers. Permalink: https://doi.org/10.1190/segam2013-0514.1FiguresReferencesRelatedDetailsCited ByMultipathing in three-parameter common-image gathers from reverse-time migration25 August 2016 | Geophysical Prospecting, Vol. 65, No. 3Scattering and dip angle decomposition based on subsurface offset extended wave-equation migrationGEOPHYSICS, Vol. 81, No. 3 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 J. P. Montel and G. Lambaré, (2013), "Wave equation angle domain common image gather asymptotic analysis," SEG Technical Program Expanded Abstracts : 3757-3761. https://doi.org/10.1190/segam2013-0514.1 Plain-Language Summary PDF DownloadLoading ...