oa Availability of Fresnel Volume Migration to 3C-Component Seismic Reflection Data Using Tau-P Transform

In seismic reflection surveys, the superposition of P- and S- waves often influences the resolution of obtained images. We, therefore, needs to first decompose multi-component data before imaging procedure even in Fresnel volume migration. For decomposition processing of refracted P- and S-waves, we need incident angles of received elastic waves. In this study, we calculated the incident angle for each receiver using tangential angles, one of which using amplitudes of acquired three component data and the other using tau-P transform. After the comparison, we used the latter considering that both incident angle and medium wave slowness could be estimated in the acquisition. Also, we use incident angles to the Fresnel volume migration. We found that the slant stack method showed better results for the data in which the secondary P-P reflected wave and first P-S reflected waves are overlapped.