Conclusions

• Pseudo-unitary Radial-trace Transform can be used to successfully eliminate radial noise present in the hydrophone component of this 2D OBC line.
• The time-domain methodology certainly removes some of the ghost energy. However, the frequency-wavenumber-domain method is more efficient in eliminating the ghost reflection, because it splits the geophone calibration and the receiver ghost elimination into two steps.
• We satisfactorily removed the receiver ghost on this data set, as is clearly shown in a comparison with the poststack migration result. However, further multiple-attenuation process is needed.