We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Procedure for the Development of a System of Mathematical Models of the Vadose Zone and the Saturated Zone for Forecasting Pollution Migration from a Near-Surface Source to the Discharge Zone.
- Authors
Kononchenko, E. V.; Petrash, A. B.
- Abstract
The presented procedure is designed to develop a system of models of the aeration zone and the saturated zone aimed to give a quantitative description of pollutant migration from a near-surface source to groundwater table and to the discharge zones of groundwater flow. The procedure is applied to an area with identified chloride pollution of groundwater. The source of pollution is a salt store, which was operated in the period 1967–2007. The concentration of chloride ion did not decrease after the liquidation of pollution source because of the formation of a secondary source (salination zone) in the aeration zone. Models of the aeration zone and the saturated zone were developed for the area under consideration. The model of the saturation zone was calibrated by monitoring data (groundwater table and chloride-ion concentration). The plume of chloride-ion in the groundwater flow was reproduced in the model in absolute concentrations. The calculations of pollutant migration in the aeration zone was calculated in relative concentrations. Simulation results were used to determine time intervals characterizing the stages of pollution plume formation over the operation time of the salt store, as well as the stages of plume degradation after the store was liquidated. The effect of model parameters for both zones on the results of transport calculations was evaluated to reveal the most significant among them. A series of model scenarios was considered (conservative and softer) to determine the variability of model forecasts. Retrospective model calculations, along with monitoring data, were used to obtain more accurate estimates of parameters, which characterize the deposits in the aeration zone.
- Publication
Water Resources, 2022, Vol 49, pS101
- ISSN
0097-8078
- Publication type
Article
- DOI
10.1134/S0097807822080073