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    Multi-parameters scanning in HTI media

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    segam2014-04372E1.pdf
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    Type
    Conference Paper
    Authors
    Masmoudi, Nabil cc
    Alkhalifah, Tariq Ali cc
    KAUST Department
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2014-08-05
    Online Publication Date
    2014-08-05
    Print Publication Date
    2014-08-05
    Permanent link to this record
    http://hdl.handle.net/10754/593369
    
    Metadata
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    Abstract
    Building credible anisotropy models is crucial in imaging. One way to estimate anisotropy parameters is to relate them analytically to traveltime, which is challenging in inhomogeneous media. Using perturbation theory, we develop traveltime approximations for transversely isotropic media with horizontal symmetry axis (HTI) as explicit functions of the anellipticity parameter η and the symmetry axis azimuth ϕ in inhomogeneous background media. Specifically, our expansion assumes an inhomogeneous elliptically anisotropic background medium, which may be obtained from well information and stacking velocity analysis in HTI media. This formulation has advantages on two fronts: on one hand, it alleviates the computational complexity associated with solving the HTI eikonal equation, and on the other hand, it provides a mechanism to scan for the best fitting parameters η and ϕ without the need for repetitive modeling of traveltimes, because the traveltime coefficients of the expansion are independent of the perturbed parameters η and ϕ. The accuracy of our expansion is further enhanced by the use of shanks transform. We show the effectiveness of our scheme with tests on a 3D model and we propose an approach for multi-parameters scanning in TI media.
    Citation
    Masmoudi*, N., & Alkhalifah, T. (2014). Multi-parameters scanning in HTI media. SEG Technical Program Expanded Abstracts 2014. doi:10.1190/segam2014-0437.1
    Publisher
    Society of Exploration Geophysicists
    Journal
    SEG Technical Program Expanded Abstracts 2014
    Conference/Event name
    SEG Technical Program Expanded Abstracts 2014
    DOI
    10.1190/segam2014-0437.1
    Additional Links
    http://library.seg.org/doi/abs/10.1190/segam2014-0437.1
    ae974a485f413a2113503eed53cd6c53
    10.1190/segam2014-0437.1
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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