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Abstract

Summary

The finite difference (FD) method is among the most popular methods for modelling seismic wave propagation. Although the method has enjoyed huge success for its ability to produce full wavefield seismograms in complex models, it also has some drawbacks compared to other modelling methods. In particular, a limitation which is of critical importance for many modelling applications is the perceived inability of FD methods to naturally output partial wavefield constituents such as up- and downgoing and P- and S-waves. We show how such wavefield constituents can naturally be isolated in FD computed synthetics with very high numerical accuracy (in principle to machine precision) by means of a simple algorithm. The description focuses on up/down separation of data generated using an isotropic elastic finite difference modelling method. The generality of the methodology makes it applicable to other types of wave propagation problems such as electromagnetic wave propagation for instance.

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/content/papers/10.3997/2214-4609.201601176
2016-05-30
2024-04-20

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References

  1. Aki, K. and Richards, RG.
    [2002] Quantitative Seismology. Mill Valley: University Science Books.
     [Google Scholar]
  2. Amundsen, L.
    [2001] Elimination of free-surface related multiples without need of the source wavelet. Geophysics, 66, 327–341.
     [Google Scholar]
  3. Amundsen, L. and Robertsson, J.
    [2014] Wave equation processing using finite-difference propagators, Part 1: Wavefield dissection and imaging of marine multicomponent seismic data. Geophysics, 79(6), T287–T300.
     [Google Scholar]
  4. Blanch, J.
    [2012] Is de-ghosting necessary without multi-component data?84th SEG Annual Meeting Expanded Abstract.
     [Google Scholar]
  5. Kennett, B.
    [1983] Seismic wave propagation in stratified media. Cambridge University Press.
     [Google Scholar]
  6. Komatitsch, D. and Martin, R.
    [2007] An unsplit convolutional perfectly matched layer improved at grazing incidence for the seismic wave equation. Geophysics, 72, SM155–SM167.
     [Google Scholar]
  7. Levander, A.
    [1988] Fourth-order finite-difference P-SV seismograms. Geophysics, 53, 1425–1436.
     [Google Scholar]
  8. Moczo, P., Robertsson, J. and Eisner, L.
    [2007] The finite-difference time-domain method for modelling of seismic wave propagation. Advances in Geophysics, 48, 421–516.
     [Google Scholar]
  9. Ravasi, M. and Curtis, A.
    [2013] Elastic imaging with exact wavefield extrapolation for application to ocean-bottom 4C seismic data. Geophysics, 78, S265–S248.
     [Google Scholar]
  10. Robertsson, J. and Amundsen, L.
    [2014] Wave equation processing using finite-difference propagators, Part 2. Deghosting of marine hydrophone seismic data. Geophysics, 79, T301–T312.
     [Google Scholar]
  11. Robertsson, J. and Chapman, C.
    [2000] An efficient method for calculating finite-difference seismograms after model alterations. Geophysics, 65(3), 907–918.
     [Google Scholar]
  12. Robertsson, J., van Manen, D.J., Schmelzbach, C, Van Renterghem, C. and Amundsen, L.
    [2015] Finite-difference modelling of wavefield constituents. Geophysical Journal International, 203(2), 1334–1342.
     [Google Scholar]
  13. Vasconcelos, I.
    [2013] Source-receiver, reverse-time imaging of dual-source, vector-acoustic seismic data. Geophysics, 78, WA123–WA145.
     [Google Scholar]
  14. Vasmel, M. and Robertsson, J.
    [2016] Exact wavefield reconstruction on finite-difference grids with minimal memory requirements. 78th EAGE Conference and Exhibition, Extended Abstracts.
     [Google Scholar]
  15. Virieux, J.
    [1986] P-SV wave propagation in heterogeneous media: Velocity-stress finite-difference method. Geophysics, 51(4), 889–901.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201601176
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Finite Difference Modelling of Wavefield Constituents
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201601176
/content/papers/10.3997/2214-4609.201601176
/content/papers/10.3997/2214-4609.201601176
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