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- W2319329789 abstract "PreviousNext No AccessBeijing 2014 International Geophysical Conference & Exposition, Beijing, China, 21-24 April 2014Velocity tomography based on turning waves and finite-frequency sensitivity kernelsAuthors: Xiao-Bi Xie*Jan PajchelXiao-Bi Xie*University of California at Santa CruzSearch for more papers by this author and Jan PajchelStatoil, NorwaySearch for more papers by this authorhttps://doi.org/10.1190/IGCBeijing2014-193 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract We present a velocity tomography method, which is based on finite-frequency sensitivity kernels and applied to turning waves in models with generally positive velocity gradient. The finite-frequency sensitivity kernels are calculated using the one-way propagator. They replace the ray tracing to create links between the velocity model errors and the observed travel time residuals. The new approach is a wave-equation based method and wave phenomena are naturally incorporated. To demonstrate the inversion process, numerical examples are presented. For 2D velocity models with 10% to 30% velocity errors, we generate the synthetic data set. The travel time differences between seismograms from the true velocity model and those from the initial (intermediate) model are used as input data. The inversion is solved in an iterative way and the velocity models can be successfully updated. Keywords: velocity, tomography, kernelsPermalink: https://doi.org/10.1190/IGCBeijing2014-193FiguresReferencesRelatedDetails Beijing 2014 International Geophysical Conference & Exposition, Beijing, China, 21-24 April 2014ISSN (online):2159-6832Copyright: 2014 Pages: 1360 publication data© 2014 Published in electronic format with permission by the Society of Exploration Geophysicists and Chinese Petroleum SocietyPublisher:Society of Exploration Geophysicists HistoryPublished: 24 Apr 2014 CITATION INFORMATION Xiao-Bi Xie* and Jan Pajchel, (2014), Velocity tomography based on turning waves and finite-frequency sensitivity kernels, SEG Global Meeting Abstracts : 756-760. https://doi.org/10.1190/IGCBeijing2014-193 Plain-Language Summary KeywordsvelocitytomographykernelsPDF DownloadLoading ..." @default.
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- W2319329789 title "Velocity tomography based on turning waves and finite-frequency sensitivity kernels" @default.
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