A two-region nonequilibrium model for solute transport in solution conduits in karstic aquifers

摘要

A two-region nonequilibrium model was used to calibrate initial solute-transport parameter estimates generated from tracer-breakthrough curves (TBCs) developed from tracer tests conducted in uni-axial solution conduits in karstic aquifiers. Two-region nonequilibrium models account for partitioning of solute into mobile- and imobile-fluid regions to produce a more representative model fit to the strong tails associated with TBCs than do equilibrium models.