1887

Abstract

Summary

Reflection and transmission (R/T) responses characterize the energy distributions for incident and generated waves across the subsurface interface. The R/T coefficients are considerably influenced by the local anisotropy. The transversely isotropic media with a vertical or horizontal symmetry axis (VTI or HTI) are commonly used models for characterizing the subsurface anisotropy. In this paper we consider the plane interface bounded by VTI and HTI half spaces, and the R/T coefficients normalized by the vertical energy flux are derived first. Under the weak contrast assumption, R/T coefficients are approximated based on two simple anisotropic models. The approximations with isotropic background media are also considered under an additional weak anisotropy assumption. Numerical tests are implemented for the proposed approximation methods.

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/content/papers/10.3997/2214-4609.201901043
2019-06-03
2024-04-23
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References

  1. Fryer, G. J. and Frazer, L. N.
    [1987] Seismic waves in stratified anisotropic media - II. Elastodynamic eigensolutions for some anisotropic systems. Geophysical Journal International, 91, 73–101.
    [Google Scholar]
  2. Jin, S. and Stovas, A.
    [2018] Reflection and transmission responses of layered transversely isotropic media with aligned horizontal symmetry axes. SEG Technical Program Expanded Abstracts 2018, 431–435.
    [Google Scholar]
  3. Rüger, A.
    [1997] P-wave reflection coefficients for transversely isotropic models with vertical and horizontal axis of symmetry. Geophysics, 62, 713–722.
    [Google Scholar]
  4. Stovas, A. and Ursin, B.
    [2003] Reflection and transmission responses of layered transversely isotropic viscoelastic media. Geophysical Prospecting, 51, 447–477.
    [Google Scholar]
  5. Thomsen, L.
    [1986] Weak elastic anisotropy. Geophysics, 51, 1954–1966.
    [Google Scholar]
  6. Ursin, B.
    [1983] Review of elastic and electromagnetic wave propagation in horizontally layered media. Geophysics, 48, 1063–1081.
    [Google Scholar]
  7. Vavryčuk, V. and Pšenčík, I.
    [1998] PP-wave reflection coefficients in weakly anisotropic elastic media. Geophysics, 63, 2129–2141.
    [Google Scholar]
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