Exact analytical solutions for contaminant transport in rivers. 2. Transient storage and decay chain solutions
2013
Genuchten, M. Th. van, Federal University of Rio de Janeiro, Rio de Janeiro (Brazil) | Leij, F. J., California State University, Long Beach, California (USA) | Skaggs, T. H., Salinity Laboratory, USDA, ARS, Riverside, California (USA) | Toride, N., Mie University, Tsu (Japan) | Bradford, S. A., Salinity Laboratory, USDA, ARS, Riverside, California (USA) | Pontedeiro, E. M., Federal University of Rio de Janeiro, Rio de Janeiro (Brazil)
Contaminant transport processes in streams, rivers, and other surface water bodies can be analyzed or predicted using the advection-dispersion equation and related transport models. In part 1 of this two-part series we presented a large number of one- and multi-dimensional analytical solutions of the standard equilibrium advection-dispersion equation (ADE) with and without terms accounting for zero-order production and first-order decay. The solutions are extended in the current part 2 to advective-dispersive transport with simultaneous first-order mass exchange between the stream or river and zones with dead water (transient storage models), and to problems involving longitudinal advectivedispersive transport with simultaneous diffusion in fluvial sediments or near-stream subsurface regions comprising a hyporheic zone. Part 2 also provides solutions for one-dimensional advective-dispersive transport of contaminants subject to consecutive decay chain reactions.
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