Diffractions and Their Multiples – Techniques to Enhance and Remove Them

The main focus of this thesis work has been diffractions and their associated multiples in marine seismic. Since diffraction carry useful information about small scale inhomogeneities in general, techniques able to enhance such events are of interest. By separating the weaker diffractions from reflections, such events can also be subtracted from the original data by adaptive techniques. Two different methods have been considered in this thesis: (i) plane wave destruction in the tau-p domain and (ii) modified Common Reflection Surface (CRS) technique. Both processing approaches have been tested employing both simple and more complex controlled dat