Reconstruction of Semblance Section for the Crust/Mantle Reflection Structure by Wide‐Angle Seismic Data

Abstract

AbstractWith the limitation of both shot and receiver numbers, seismic data are sometimes not sufficient for practical wide‐angle seismic experiments. In order to enhance the lateral continuity of seismic reflection events from the sparse wide‐angle seismic data, we present a new technique to reconstruct the resemblance section of the crust/mantle reflection structure based on the geometrical diffraction theory. The travel‐time conditions for reconstructing the semblance section are calculated using the reciprocity principle, and the travel‐time field from shots and receivers are computed using Eikonal solver, which have the advantage of high efficiency and accuracy. Compared with CDP mapping, the processing results of real wide‐angle seismic data in southeastern China demonstrates that this method can improve the lateral consistency of the imaging section.