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    A New Wave Equation Based Source Location Method with Full-waveform Inversion

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    Type
    Conference Paper
    Authors
    Wu, Zedong cc
    Alkhalifah, Tariq Ali cc
    KAUST Department
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Seismic Wave Analysis Group
    Date
    2017-05-26
    Online Publication Date
    2017-05-26
    Print Publication Date
    2017-06-12
    Permanent link to this record
    http://hdl.handle.net/10754/624896
    
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    Abstract
    Locating the source of a passively recorded seismic event is still a challenging problem, especially when the velocity is unknown. Many imaging approaches to focus the image do not address the velocity issue and result in images plagued with illumination artifacts. We develop a waveform inversion approach with an additional penalty term in the objective function to reward the focusing of the source image. This penalty term is relaxed early to allow for data fitting, and avoid cycle skipping, using an extended source. At the later stages the focusing of the image dominates the inversion allowing for high resolution source and velocity inversion. We also compute the source location explicitly and numerical tests show that we obtain good estimates of the source locations with this approach.
    Citation
    Wu Z, Alkhalifah T (2017) A New Wave Equation Based Source Location Method with Full-waveform Inversion. 79th EAGE Conference and Exhibition 2017. Available: http://dx.doi.org/10.3997/2214-4609.201700753.
    Sponsors
    We thank KAUST for its support and we thank the SWAG group for collaborative environment. We thank Guanghui Huang and Hanchen Wang for the useful discussions. For computer time, this research used the resources of the Supercomputing Laboratory at King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia.
    Publisher
    EAGE Publications
    Journal
    79th EAGE Conference and Exhibition 2017
    DOI
    10.3997/2214-4609.201700753
    Additional Links
    http://www.earthdoc.org/publication/publicationdetails/?publication=88470
    ae974a485f413a2113503eed53cd6c53
    10.3997/2214-4609.201700753
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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