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FIG. 7. (A) Reflection tomogram from Line 2 (Fig. 4). Note the abrupt lateral decrease in vadose zone velocity at 145 m, and the anomalously high saturated-zone velocities on the left side of the profile. Horizons used for residual moveout analysis are shown in black. (B) Moisture content estimated from the velocity model in (A). Moisture content increases laterally from 10% (v/v) in Zone 1 to nearly 20% in Zone 2. (C) The moisture content anomaly is computed by subtracting the moisture estimate in (B) from the starting model. The moisture content anomaly just below the water table is consistent with estimated water displacement due to measured amounts of free light nonaqueous-phase liquid.
