Processing of Very High Resolution 3D Marine Seismic Data

Very High Resolution marine 3D seismics offers wide use both in the field of engineering geophysics as well as for geological and environmental site investigations. Considering the frequency content of the data, specific 3D processing techniques have to be applied in order to obtain a correct image of the subsurface. Due to the average wavelength of the "seismic signal and the width of its associated Fresnel zone, CMP-like processing can still lead to a destructive stack of misplaced events. The latter will also be the case if precise time delay corrections are not applied. A first step in the development of such 3D processing techniques was done using a very high resolution 3D data volume previously acquired on the river Schelde in Antwerpen.