Rice Univesrity Logo
    • FAQ
    • Deposit your work
    • Login
    View Item 
    •   Rice Scholarship Home
    • Rice University Graduate Electronic Theses and Dissertations
    • Rice University Electronic Theses and Dissertations
    • View Item
    •   Rice Scholarship Home
    • Rice University Graduate Electronic Theses and Dissertations
    • Rice University Electronic Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Diffraction phenomena around salt masses

    Thumbnail
    Name:
    RICE0967.pdf
    Size:
    6.207Mb
    Format:
    PDF
    View/Open
    Author
    Madrigal Ugalde, Luis
    Date
    1968
    Advisor
    Clark, H. C.
    Degree
    Master of Arts
    Abstract
    The problem was to determine the use of diffracted events as an interpretive tool in reflection seismograms. The phenomenon was studied in relation to salt masses because this type of plastic intrusion is associated with different structural shapes capable of causing diffraction. Those features are (a) the border of the crest in an anticlinal shaped body, (b) the intersection between the flank and the horizontal bottom of a syncline on the salt body, (c) relatively small anticline-like irregularities over the salt mass, and (d) tapered layers ending over the salt masses as wedges. The solution was obtained by a two-dimensional model technique. The laboratory seismograms showed that diffraction occurs in the presence of curved interfaces when the radius of curvature does not exceed a certain proportionality with the wavelength of the elastic wave; that there is a difference in amplitude decay and move-out between a reflection and a diffraction event; that the epicenter of diffraction is located by the minimum time coordinate of the corresponding hyperbolic curve; that shadow zones predicted by ray theory are "illuminated" by diffraction events; that on transition from diffracted to reflected waves the amplitude of the former increases; that the amplitude of interference waves reaches a maximum as the reflected and diffracted wave fronts reach a constructive interference and that the maximum shifts away from the focus of diffraction when the distance between the source and the same focus increases.
    Citation
    Madrigal Ugalde, Luis. "Diffraction phenomena around salt masses." (1968) Master’s Thesis, Rice University. https://hdl.handle.net/1911/89932.
    Metadata
    Show full item record
    Collections
    • Rice University Electronic Theses and Dissertations [13409]

    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map

     

    Searching scope

    Browse

    Entire ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsTypeThis CollectionBy Issue DateAuthorsTitlesSubjectsType

    My Account

    Login

    Statistics

    View Usage Statistics

    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map