Compensating visco-acoustic effects in anisotropic resverse-time migration (2012)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2012Compensating visco-acoustic effects in anisotropic resverse-time migrationAuthors: Sang SuhKwangjin YoonJames CaiBin WangSang SuhTGS, Kwangjin YoonTGS, James CaiTGS, and Bin WangTGShttps://doi.org/10.1190/segam2012-1297.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Anelastic properties of the earth cause frequency dependent energy attenuation and phase distortion in seismic wave propagation. It is preferred that these unwanted effects be corrected in a prestack depth migration. Zhang et al (2010) introduced a visco-acoustic wave equation in the time domain for isotropic media. This paper extends the visco-acoustic wave equation for anisotropic case, and develops visco-acoustic reverse time migration algorithm for VTI medium. To validate the proposed wave equation, wave propagation is simulated on a homogeneous viscous VTI medium using a finite difference method. The wavefield snapshot shows predicted frequency dependent attenuation and dispersion. Synthetic and field data examples are also given. 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