P-wave signatures and notation for transversely isotropic media: An overview
- Colorado School of Mines, Golden, CO (United States). Center for Wave Phenomena
Progress in seismic inversion and processing in anisotropic media depends on the ability to relate different seismic signatures to the anisotropic parameters. While the conventional notation (stiffness coefficients) is suitable for forward modeling, it is inconvenient in developing analytic insight into the influence of anisotropy on wave propagation. Here, a consistent description of P-wave signatures in transversely isotropic (TI) media with arbitrary strength of the anisotropy is given in terms of Thomsen notation. The influence of transverse isotropy on P-wave propagation is shown to be practically independent of the vertical S-wave velocity V{sub S0}, even in models with strong velocity variations. Therefore, the contribution of transverse isotropy to P-wave kinematic and dynamic signatures is controlled by just two anisotropic parameters, {var_epsilon} and {delta}, with the vertical velocity V{sub P0} being a scaling coefficient in homogeneous models.
- DOE Contract Number:
- FG02-89ER14079
- OSTI ID:
- 218399
- Journal Information:
- Geophysics, Journal Name: Geophysics Journal Issue: 2 Vol. 61; ISSN GPYSA7; ISSN 0016-8033
- Country of Publication:
- United States
- Language:
- English
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