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    An adaptive multiscale algorithm for efficient extended waveform inversion

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    Author
    Fu, Lei; Symes, William W.
    Date
    2017
    Abstract
    Subsurface-offset extended full-waveform inversion (FWI) may converge to kinematically accurate velocity models without the low-frequency data accuracy required for standard data-domain FWI. However, this robust alternative approach to waveform inversion suffers from a very high computational cost resulting from its use of nonlocal wave physics: The computation of strain from stress involves an integral over the subsurface offset axis, which must be performed at every space-time grid point. We found that a combination of data-fit driven offset limits, grid coarsening, and low-pass data filtering can reduce the cost of extended inversion by one to two orders of magnitude.
    Citation
    Fu, Lei and Symes, William W.. "An adaptive multiscale algorithm for efficient extended waveform inversion." Geophysics, 82, no. 3 (2017) Society of Exploration Geophysicists: R183-R197. http://dx.doi.org/10.1190/geo2016-0426.1.
    Published Version
    http://dx.doi.org/10.1190/geo2016-0426.1
    Keyword
    full-waveform inversion; velocity analysis; imaging
    Type
    Journal article
    Publisher
    Society of Exploration Geophysicists
    Citable link to this page
    https://hdl.handle.net/1911/94195
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • CAAM Publications [71]
    • Faculty Publications [4990]

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    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