Estimation of Thomsen's anisotropy parameter, delta, using CSP gathers

Pavan Kumar Elapavuluri, John C. Bancroft

In order to extend the seismic processing techniques to anisotropic media, a measure of the different parameters of anisotropy is required. The purpose of this study is to estimate the Thomsen.s parameter, (delta), for transversely isotropic (TI) media. Thomsen.s anisotropic normal moveout equation (NMO) is used to determine (delta). It is also shown that estimated using common Scatter Point (CSP) gathers is more accurate than those estimated from common mid point (CMP) gathers.