Column displacement experiments to validate hydrogeochemical models of seawater intrusions

Abstract

Two sets of experimental data have been obtained flushing seawater through columns packed with sediment which had been previously in equilibrium with freshwater. The sets of data contain the ion concentrations of the outflow and the physical and chemical parameters needed for the theoretical simulation of marine intrusion using a hydrogeochemical model. The results show the decisive importance of the Péclet number in the shape of the curves of variation of the different ions with time.