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EXAMINATION OF SCALE-DEPENDENT DISPERSION COEFFICIENTS
Citation:
Molz, F., O. Gueven, AND J. Melville. EXAMINATION OF SCALE-DEPENDENT DISPERSION COEFFICIENTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-83/302 (NTIS PB85225043), 1983.
Description:
Many hydrologists have observed that dispersion coefficients, when measured in the field, turn out to be scale-dependent. Recently, Guven, et al., (1983) presented a study which contains a basis for understanding the phenomenon of scale-dependent dispersion within a deterministic framework. The results of that study are used as a basis for defining a scale-dependent macro-dispersion coefficient for unidirectional flow in a stratified aquifer. The study and previous studies show that the primary physical mechanism that causes spreading of a solute near the source is different advection rates at different elevations in the aquifer.