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    Pure P and S wave equations in transversely isotropic media

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    1365-2478.13026.pdf
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    Description:
    Accepted Article
    Embargo End Date:
    2021-08-22
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    Type
    Article
    Authors
    Stovas, Alexey cc
    Alkhalifah, Tariq Ali cc
    Waheed, Umair bin
    KAUST Department
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2020-09-09
    Online Publication Date
    2020-09-09
    Print Publication Date
    2020-11
    Embargo End Date
    2021-08-22
    Submitted Date
    2020-04-13
    Permanent link to this record
    http://hdl.handle.net/10754/664964
    
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    Abstract
    Pure mode wave propagation is important for applications ranging from imaging to avoiding parameter tradeoff in waveform inversion. Although seismic anisotropy is an elastic phenomenon, pseudo-acoustic approximations are routinely used to avoid the high computational cost and difficulty in decoupling wave modes to obtain interpretable seismic images. However, such approximations may result in inaccuracies in characterizing anisotropic wave propagation. We propose new pure mode equations for P- and S-waves resulting in an artifact-free solution in transversely isotropic medium with a vertical symmetry axis. Our approximations are more accurate than other known approximations as they are not based on weak anisotropy assumptions. Therefore, the S-wave approximation can reproduce the group velocity triplications in strongly anisotropic media. The proposed approximations can be used for accurate modelling and imaging of pure P- and S-waves in transversely isotropic media.
    Citation
    Stovas, A., Alkhalifah, T., & Waheed, U. bin. (2020). Pure P and S wave equations in transversely isotropic media. Geophysical Prospecting. doi:10.1111/1365-2478.13026
    Publisher
    Wiley
    Journal
    Geophysical Prospecting
    DOI
    10.1111/1365-2478.13026
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1111/1365-2478.13026
    ae974a485f413a2113503eed53cd6c53
    10.1111/1365-2478.13026
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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