Sammendrag
Multiple reflections in marine seismic data are an old standing problem. We present a new fast work flow for attenuation of free-surface related multiples for 2D and 3D Ocean Bottom Seismic (OBS) data based on the wave equation approach from Amundsen (2001a, 2001b). Free-surface multiple attenuation is performed in the radon domain. Data are transformed into the Radon (-p-q) domain by means of a fast Radon Transform using Fourier projection slice theorem. This allows transforming even large data sets in a fast manner.Then, the wavefield is split into its up-and down-going part and which are used to create a deterministic deconvolution filter to attenuate the energy of the free-surface multiples.