Imaging of near-surface heterogeneities by scattered elastic waves
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Abdulaziz-2015-Imaging of near-surface.pdf
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Author(s)
Almuhaidib, Abdulaziz M.
Toksoz, M. Nafi
Almuhaidib, Abdulaziz M.
Date Issued
June 2015
Journal
Geophysics
Publisher
Society of Exploration Geophysicists
Citation
Almuhaidib, Abdulaziz M., and M. Nafi Toksoz. “Imaging of Near-Surface Heterogeneities by Scattered Elastic Waves.” Geophysics 80, no. 4 (June 10, 2015): A83–A88. © 2015 Society of Exploration Geophysicists
Version
Final published version
Abstract
We have developed an elastic reverse time migration (RTM) approach for imaging near-surface heterogeneities, such as karst features, using scattered waves (e.g., body to P-, S-, and surface waves). Knowledge of location and strength of the scatterers helps in seismic imaging, survey planning, and geotechnical site characterization. To model seismic wave propagation for RTM, we use an elastic staggered-grid finite-difference scheme. The scattered body-to-surface waves provide optimal illumination and wavenumber coverage of the near surface as they travel horizontally along the free surface. We tested the elastic RTM approach on synthetic data simulated using a finite-difference solver and found it to be robust.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Massachusetts Institute of Technology. Earth Resources Laboratory
Terms of Use
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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DOI of Published Version
https://doi.org/10.1190/GEO2014-0416.1
