1887

Abstract

Summary

We investigate the proper derivation of forward and adjoint pairs for least squares reverse time migration. We adopt a matrix-vector formulation to guide the development of our algorithm. We also investigate the development of conjugate gradients solutions with preconditioning techniques for the alleviation of low wavenumber artifacts that contaminate images that are computed via reverse time migration.

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/content/papers/10.3997/2214-4609.201601197
2016-05-31
2020-03-29
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References

  1. Bérenger, J.P.
    [2007] Perfectly matched layer (PML) for computational electromagnetics. Synthesis Lectures on Computational Electromagnetics, 2(1), 1–117.
    [Google Scholar]
  2. Claerbout, J.F.
    [1992] Earth sounding analysis: Processing versus inversion. Blackwell Scientific Publication.
    [Google Scholar]
  3. Ji, J.
    [2009] An exact adjoint operation pair in time extrapolation and its application in least-squares reverse-time migration. Geophysics, 74(5), H27–H33.
    [Google Scholar]
  4. Kuhl, H. and Sacchi, M.D.
    [2003] Least-squares wave-equation migration for A VP/AV A inversion. Geophysics, 68(1), 262–273.
    [Google Scholar]
  5. Nemeth, T., Wu, C. and Schuster, G.T.
    [1999] Least-squares migration of incomplete reflection data. Geophysics, 64(1), 208–221.
    [Google Scholar]
  6. Wang, J., Kuehl, H. and Sacchi, M.D.
    [2005] High-resolution wave-equation A V A imaging: Algorithm and tests with a data set from the Western Canadian Sedimentary Basin. Geophysics, 70(5), S91–S99.
    [Google Scholar]
  7. Wang, J. and Sacchi, M.D.
    [2007] High-resolution wave-equation amplitude-variation-with-ray-parameter (AVP) imaging with sparseness constraints. Geophysics, 72(1), S11–S18.
    [Google Scholar]
  8. Y ang, J., Liu, Y. and Dong, L.
    [2015] Frequency domain least-squares reverse time migration with a modified scattering-integral approach, doi:10.1190/segam2015‑5909496.1, chap. 797. SEG Techni-cal Program Expanded Abstracts, 4164–4169.
    https://doi.org/10.1190/segam2015-5909496.1 [Google Scholar]
  9. Yao, G.
    [2013] Least-squares reverse-time migration. PhD Thesis, Imperial College London, UK.
    [Google Scholar]
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