A New Wave Equation Based Source Location Method with Full-waveform Inversion
Type
Conference PaperAuthors
Wu, Zedong
Alkhalifah, Tariq Ali

KAUST Department
Earth Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Seismic Wave Analysis Group
Date
2017-05-26Online Publication Date
2017-05-26Print Publication Date
2017-06-12Permanent link to this record
http://hdl.handle.net/10754/624896
Metadata
Show full item recordAbstract
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 Publicationsae974a485f413a2113503eed53cd6c53
10.3997/2214-4609.201700753