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Abstract

Summary

Considering the difficulty of separating elastic vector wave-fields into different wave modes in anisotropic qP-wave modeling and imaging, acoustic approximation is an effective way. However in heterogeneous TTI media, setting shear velocity along the symmetry axis to zero can cause numerical solutions to be unstable, we solve this problem by introducing three different auxiliary functions including anisotropic parameter σ, and deduce three TTI second-order qP-wave equations and the corresponding first-order stress-velocity forms. Then, we solve the TTI first-order qP-wave equations by the improved RSFD method to avoid elastic modulus interpolation and enhance numerical accuracy. Numerical results show the validity and stability of the proposed method.

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/content/papers/10.3997/2214-4609.201412700
2015-06-01
2024-04-26

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References

  1. Alkhalifah, T.
    [2000] An acoustic wave equation for anisotropic media. Geophysics, 65(4), 1239–1250.
     [Google Scholar]
  2. Duveneck, E., Milcik, P. and Bakker, P.M.
    [2008] Acoustic VTI wave equations and their application for anisotropic reverse time migration. SEG Technical Program Expanded Abstracts.
     [Google Scholar]
  3. Fletcher, R., Du, X. and Fowler, P.J.
    [2008] A new pseudo-acoustic wave equation for TI media. 78th Annual International Meeting, SEG, Expanded Abstracts.
     [Google Scholar]
  4. Fletcher, R.P., Du, X. and Fowler, P.J.
    [2009] Reverse time migration in tilted transversely isotropic (TTI) media. Geophysics, 74(6), WCA179–WCA187.
     [Google Scholar]
  5. Grechka, V., Zhang, L. and Rector, J.W.
    [2004] Shear waves in acoustic anisotropic media. Geophysics, 69(2), 576–582.
     [Google Scholar]
  6. Saenger, E.H. and Bohlen, T.
    [2004] Finite-difference modelling of viscoelastic and anisotropic wave propagation using the rotated staggered grid. Geophysics, 69, 583–591.
     [Google Scholar]
  7. Tsvankin, I.
    [2001] Seismic signatures and analysis of reflection data in anisotropic media. Elsevier Science.
     [Google Scholar]
  8. Yan, H., Yang, L. and Liu, H.
    [2014] Acoustic Reverse-time Migration with Least Squares Staggered-grid Finite-difference operators. EAGE, Extended Abstracts.
     [Google Scholar]
  9. Zhou, H.B., Zhang, G.Q. and Bloor, R.
    [2006] An anisotropic acoustic wave equation for modeling and migration in 2D TTI media. SEG, Expanded Abstracts.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201412700
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Stable TTI qP-wave Numerical Simulation Based on the Improved Rotated Staggered-grid Finite-difference Scheme
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201412700
/content/papers/10.3997/2214-4609.201412700
/content/papers/10.3997/2214-4609.201412700
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