• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Diffraction traveltime approximation for TI media with an inhomogeneous background

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Waheed, Umair bin cc
    Alkhalifah, Tariq Ali cc
    Stovas, A.
    KAUST Department
    Earth Science and Engineering Program
    Environmental Science and Engineering Program
    KAUST Solar Center (KSC)
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2013-09
    Permanent link to this record
    http://hdl.handle.net/10754/562953
    
    Metadata
    Show full item record
    Abstract
    Diffractions in seismic data contain valuable information that can help improve our modeling capability for better imaging of the subsurface. They are especially useful for anisotropic media because they inherently possess a wide range of dips necessary to resolve the angular dependence of velocity. We develop a scheme for diffraction traveltime computations based on perturbation of the anellipticity anisotropy parameter for transversely isotropic media with tilted axis of symmetry (TTI). The expansion, therefore, uses an elliptically anisotropic medium with tilt as the background model. This formulation has advantages on two fronts: first, it alleviates the computational complexity associated with solving the TTI eikonal equation, and second, it provides a mechanism to scan for the best-fitting anellipticity parameter η without the need for repetitive modeling of traveltimes, because the traveltime coefficients of the expansion are independent of the perturbed parameter η. The accuracy of such an expansion is further enhanced by the use of Shanks transform. We established the effectiveness of the proposed formulation with tests on a homogeneous TTI model and complex media such as the Marmousi and BP models.
    Citation
    Waheed, U. bin, Alkhalifah, T., & Stovas, A. (2013). Diffraction traveltime approximation for TI media with an inhomogeneous background. GEOPHYSICS, 78(5), WC103–WC111. doi:10.1190/geo2012-0413.1
    Sponsors
    We would like to thank KAUST and ROSE project for financial support. We also extend thanks to BP for releasing the benchmark synthetic model. We acknowledge useful discussions with David Ketcheson on implementing the TTI eikonal solver. We are extremely grateful to Claudia Vanelle, Stig-Kyrre Foss, Zvi Koren, and Sergius Dell for useful reviews that improved the quality of the paper.
    Publisher
    Society of Exploration Geophysicists
    Journal
    Geophysics
    DOI
    10.1190/GEO2012-0413.1
    ae974a485f413a2113503eed53cd6c53
    10.1190/GEO2012-0413.1
    Scopus Count
    Collections
    Articles; Environmental Science and Engineering Program; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program; KAUST Solar Center (KSC)

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.