Generalized nonhyperbolic moveout approximation |

Our next analytical example is a horizontal reflector in a homogeneous
VTI (vertically transverse isotropic) medium. As derived in Appendix
E, the approximation coefficients, under the assumption of the
acoustic approximation of Alkhalifah (1998), take the form

Equation 2 with coefficients given by equations 34-36 is precisely equivalent to the traveltime approximation suggested previously by Fomel (2004). Fomel (2004) shows comparisons with alternative non-hyperbolic approximations, which demonstrate superior accuracy of equation 2 in case of strongly anisotropic media.

2013-07-26