Receiver Function Forward Modeling and Migration Based on the Wave-Equation Finite Difference Method

Abstract

We use the wave-equation finite difference algorithm to perform forward modeling and migration of receiver function. With help of concepts in exploration seismology, the equivalent velocity and traveltime equation are established, then the forward calculation and migration of receiver function are implemented by the wave-equation finite difference method. The numerical calculation indicates that imaging of point diffractor and dome structure can be accomplished with high accuracy employing poststack wave-equation finite difference migration. We also discuss the applicabilities of poststack finite difference migration and Kirchhoff migration to receiver function migration according to numerical results. Finally, the effects of velocity error on imaging are analyzed.