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    Waveform inversion of lateral velocity variation from wavefield source location perturbation

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    segam2013-04942E1.pdf
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    Description:
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    Type
    Conference Paper
    Authors
    Choi, Yun Seok
    Alkhalifah, Tariq Ali cc
    KAUST Department
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2013-08-19
    Online Publication Date
    2013-08-19
    Print Publication Date
    2013-09
    Permanent link to this record
    http://hdl.handle.net/10754/593696
    
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    Abstract
    It is challenge in waveform inversion to precisely define the deep part of the velocity model compared to the shallow part. The lateral velocity variation, or what referred to as the derivative of velocity with respect to the horizontal distance, with well log data can be used to update the deep part of the velocity model more precisely. We develop a waveform inversion algorithm to obtain the lateral velocity variation by inverting the wavefield variation associated with the lateral shot location perturbation. The gradient of the new waveform inversion algorithm is obtained by the adjoint-state method. Our inversion algorithm focuses on resolving the lateral changes of the velocity model with respect to a fixed reference vertical velocity profile given by a well log. We apply the method on a simple-dome model to highlight the methods potential.
    Citation
    Choi, Y., & Alkhalifah, T. (2013). Waveform inversion of lateral velocity variation from wavefield source location perturbation. SEG Technical Program Expanded Abstracts 2013. doi:10.1190/segam2013-0494.1
    Publisher
    Society of Exploration Geophysicists
    Journal
    SEG Technical Program Expanded Abstracts 2013
    Conference/Event name
    SEG Technical Program Expanded Abstracts 2013
    DOI
    10.1190/segam2013-0494.1
    Additional Links
    http://library.seg.org/doi/abs/10.1190/segam2013-0494.1
    ae974a485f413a2113503eed53cd6c53
    10.1190/segam2013-0494.1
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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