Stacks of the synthetic waveforms shown in Figure 11. (a) NMO corrected stacked traces using all of the traces (0-3850 m) for the cross-line (S1) and in-line (S2) records. (b) Range-limited stack using offsets equivalent to those used in the processing of the field data (0-3350 m). The color scale is linear and only the negative amplitudes get assigned a color. Note the more dramatic decreases in amplitudes, from S1 to S2, for the anisotropic cases than for the isotropic case. The full offset stack includes reflections that have gone post-critical; the amplitude differences on the full-range stacks are less obvious.