Investigating the impact of advective and diffusive controls in solute transport on geoelectrical data

►Hysteresis between fluid and bulk apparent electrical conductivity can be caused by both large-scale heterogeneity and subscale heterogeneity described by dual-domain mass transfer. ►The shape and magnitude of the observed hysteresis is controlled by the spatial distribution of hydraulic heterogeneity, mass transfer rate between domains, and ratio of mobile to immobile porosity. ►The shape of the hysteresis curve is indicative of the length scale over which mass transfer is occurring.