Post‐stack velocity analysis in the dip‐angle domain using diffractions

Interval velocity analysis in complex geological areas is often considered as an unresolved problem. A novel approach to improve the velocity analysis process is to perform the analysis in a non‐conventional domain and to use seismic events that are usually ignored during standard data processing and imaging. In this study, a method to analyse diffraction data for migration velocity analysis in the time‐ or depth‐domain is presented. The method is based on the clear distinction between diffractions and reflections in the post‐migration dip‐angle domain. The attractive possibility to perform the analysis, using only stacked data as an input, is demonstrated on synthetic and real data examples.