1887

Abstract

Summary

We present a new methodology for local wave field simulation after model updates using exact boundary conditions (EBC’s). The finite-difference time-domain (FDTD) solver can be applied to models of arbitrary complexity. We apply the local wave field modelling algorithm to a subset of the Sigsbee 2B model. We demonstrate that the wave field can be correctly modelled on a truncated domain and includes all (long-range) interactions with the surrounding domain. The proposed method, which is extendable to 3D and is also applicable to multiple disconnected truncated domains, could be advantageous for applications based on targeted iterative wave field recomputations, such as full waveform inversion (FWI).

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/content/papers/10.3997/2214-4609.201601666
2016-05-31
2021-02-25
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References

  1. Paffenholz, J., B.McLain, J.Zaske, and P.Keliher
    [2002] Subsalt multiple attenuation and imaging: Observations from the Sigsbee2B synthetic dataset. SEG Technical Program Expanded Abstracts 2002, 2122–2125
    [Google Scholar]
  2. Robertsson, J.O.A. and Chapman, C.
    [2000] An efficient method for calculating finite difference seismograms after model alterations. Geophysics, 65(3), 907–918.
    [Google Scholar]
  3. van Manen, D.J., Robertsson, J.O.A. and Curtis, A.
    [2007] Exact wave field simulation for finite volume scattering problems. Journal of the Acoustical Society of America, 122(4), EL115–EL121.
    [Google Scholar]
  4. van Manen, D.-J., Vasmel, M., Greenhalgh, S. and Robertsson, J.O.A.
    [2015] Broadband cloaking and holography using exact boundary conditions. Journal of the Acoustical Society of America, 137(6), EL415–EL421.
    [Google Scholar]
  5. Vasmel, M., Robertsson, J. O. A., van Manen, D. J., and Curtis, A.
    [2013] Immersive experimentation in a wave propagation laboratory. J. Acoust. Soc. Am. (Express Letters), 134, EL492–EL498.
    [Google Scholar]
  6. Willemsen, B., Malcolm, A. and Winston, L.
    [2016] A numerically exact local solver applied to salt boundary inversion in seismic full waveform inversion. Geophysical Journal International, 204(3), 1703–1720.
    [Google Scholar]
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