3D Interferometric Extrapolation of SSP Marine Data

I present the theory and numerical results for interferometrically extrapolating marine surface seismic profiles (SSP). For the extrapolation of SSP data I use the combination of a natural Green's function and a model-based Green's function for the water-layer model. Synthetic results show that the SSP data with no receivers at the near offsets can be accurately extrapolated to create virtual traces at the near offsets with virtual receivers. Reciprocity is used to increase the number of usable traces and enhance accuracy of the virtual traces. A non-stationary 1D multi-channel image matching filter is used after interferometric extrapolation to mitigate extrapolation artifacts. The drawback to this method is that the Green's function is only partly recovered under extrapolation.