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- Craig Hyslop
- University of Houston 1 , Department of Earth and Atmospheric Sciences, Houston, Texas, . E-mail: cwhyslop@gmail.com ; rrstewart@uh.edu .
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- Robert R. Stewart
- University of Houston 1 , Department of Earth and Atmospheric Sciences, Houston, Texas, . E-mail: cwhyslop@gmail.com ; rrstewart@uh.edu .
書誌事項
- 公開日
- 2015-04-23
- DOI
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- 10.1190/geo2014-0066.1
- 公開者
- Society of Exploration Geophysicists
この論文をさがす
説明
<jats:title>ABSTRACT</jats:title> <jats:p>Surface waves that reflect or backscatter from sharp lateral changes in the near surface provide information about the location, depth, and amount of these variations. We developed a 2D semianalytic forward model for surface-wave propagation and used it to design a processing flow for determining surface-wave reflection coefficients as a function of spatial location along a survey line and frequency (or depth). Using these reflection coefficients, we updated surface-wave phase-velocities (determined by picking dispersion curves) across the survey line. The result was a sharply defined phase-velocity model in the lateral direction, which can be inverted for an S-wave velocity model. Two synthetic examples of blind faults with data simulated by the spectral-element method were developed for our processing flow. Buried faults were properly located, and the S-wave velocity model was improved in the lateral direction. In addition, our method effectively identified faults for seismic data acquired across the Hockley Fault system near Houston, Texas.</jats:p>
収録刊行物
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- Geophysics
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Geophysics 80 (3), EN69-EN82, 2015-04-23
Society of Exploration Geophysicists
