Method of attenuating noise in marine seismic streamers utilizing varied sensor spacing and position-dependent band-pass filters

A method for attenuating noise in seismic signals detected in a marine seismic streamer, comprising:

• detecting seismic signals at one or more sensor arrays in the streamer, sensors in each sensor array evenly spaced apart by a sensor spacing to form a wavenumber filter
• that attenuates the seismic signals within a range of wavenumbers;
• operatively applying the output signals of each of said wavenumber filters to one one or more band-pass filters
• to generate one or more noise-attenuated output signals;
• and
• wherein the range of wavenumbers attenuated by each said wavenumber filter and the passbands of each said band-pass filter are selected in relation to the range of wavenumbers attenuated at a selected velocity range by the corresponding wavenumber filter to whose output signals the band-pass filter is applied, so that in the noise-attenuated output signals within a selected frequency range of interest propagating along the cable within said selected velocity range are attenuated and signals within said selected frequency range of interest having a velocity range outside said selected velocity range are preserved.