Adaptive Beamformers and Time Corrections

Receiver arrays are used in seismic acquisition for data reduction. The array response can be computed based on single-sensor recordings, preferable after a data pre-processing performed in order to eliminate the static and amplitude effects. An adaptive beamforming algorithm is presented in this paper with application on synthetic and field seismic data; we compare these results with those obtained using standard arrays. in addition, we study the effectiveness of time corrections applied in order to correct the effect of low apparent velocities of the reflected waves on beamformer response.