“…In seismic fracture characterization (Angerer et al, 2003) we work with azimuth-limited data sets of wide-azimuth, wide-offset surveys which provide the multi-dimensional input to AFACK. Here, geostatistical filtering is performed in two passes and achieves the following: (1) the evaluation of the common part of all azimuths, (2) an isolation of the anisotropy component of each azimuth, and (3) the removal of random and organized noise.…”