New methodology for water layer multiple attenuation in OBC Data
Résumé
Combining hydrophone and vertical geophone is a key point in OBC processing. We show in this paper a new methodology for PZ summation performed in the , pdomain. Starting by Soubaras equations initially written for the zero offset trace, we extend them to 2D through the linear radon transform. This allows a better amplitude preservation and noise rejection after summation. Finally, we illustrate improvements on a real dataset in comparison with the usual 1D approach.