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Prediction of Dispersivity for Undisturbed Soil Columns from Water Retention Parameters

^a Dep. of Geological Sciences, Univ. of Tennessee, Knoxville, TN 37996
^b Dep. of Plants, Soils and Biometeorology, Utah State Univ., Logan, UT 84322
^c Dep. of Agronomy, Univ. of Kentucky, Lexington, KY 40546

View larger version (26K): [in a new window]   Fig. 1. Schematic of the experimental set up for the miscible-displacement experiments; h is the hydraulic head.

View larger version (18K): [in a new window]   Fig. 2. Representative solute breakthrough curves for Bruno loamy sand and Karnak silty clay.

View larger version (13K): [in a new window]   Fig. 3. Relationship between D and v for the 69 soil columns.

View larger version (21K): [in a new window]   Fig. 4. Ranked dispersivities and associated soil textural classes.

View larger version (17K): [in a new window]   Fig. 5. Predicted, using the regression coefficients in Table 5, versus observed dispersivities.