Figure 1. Time slices of reflection amplitude at 769 ms (a) without, and (b) with kx-ky filtering for suppression of acquisition footprint. The vertical striations (acquisition footprint) seen on panel a are removed on filtered panel b. Stratal slices of most-positive curvature calculated from data (c) before, and (d) after footprint filtering. Numerous vertical trends seen on panel c are eliminated on panel d.