Curvilinear wave-equation angle transform: Caustics, turning rays, absence of kinematic artifacts

C.C. Stolk, M.V. de Hoop

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    1 Citation (Scopus)

    Abstract

    Migration of seismic reflection data to common image-point gathers is an integral part of both migration velocity analysis (MVA) and amplitude (AVA) analysis. Its applicability in complex geology depends on whether these gathers will be artifact free, and is related to the formation of caustics and turning `rays' due to the heterogeneity of the velocity model used. Here, we discuss an angle transform — which by methods of (survey-sinking or shot-geophone) wave-equation migration maps data into image gathers — in special curvilinear coordinates that remains artifact free in the presence of caustics while allowing turning `rays' to illuminate steeply dipping reflectors.
    Original languageUndefined
    Title of host publicationSEG Technical Program Expanded Abstract - 2007
    Place of PublicationTulsa, OK
    PublisherSociety of Exploration Geophysicists
    Pages2180-2184
    Number of pages2180
    ISBN (Print)1052-3812
    DOIs
    Publication statusPublished - 2007

    Publication series

    NameSEG Technical Program Expanded Abstracts
    PublisherSociety of Exploration Geophysicists
    Number1
    Volume26
    ISSN (Print)1052-3812

    Keywords

    • IR-62054
    • METIS-245858
    • EWI-11570

    Cite this

    Stolk, C. C., & de Hoop, M. V. (2007). Curvilinear wave-equation angle transform: Caustics, turning rays, absence of kinematic artifacts. In SEG Technical Program Expanded Abstract - 2007 (pp. 2180-2184). [10.1190/1.2792919] (SEG Technical Program Expanded Abstracts; Vol. 26, No. 1). Tulsa, OK: Society of Exploration Geophysicists. https://doi.org/10.1190/1.2792919