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Assessing the saltwater remediation potential of a three-dimensional,heterogeneous, coastal aquifer system |
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| Authors: | Marc Walther Lars Bilke Jens-Olaf Delfs Thomas Graf Jens Grundmann Olaf Kolditz Rudolf Liedl |
| Institution: | 1. Institute for Groundwater Management, Technische Universit?t Dresden, Dresden, Germany 2. Department of Environmental Informatics, Helmholtz-Centre for Environmental Research, Leipzig, Germany 3. Institute of Geosciences, Christian-Albrechts-Universit?t zu Kiel, Kiel, Germany 4. Institute of Fluid Mechanics and Environmental Physics in Civil Engineering, Leibniz Universit?t Hannover, Hannover, Germany 5. Institute of Hydrology and Meteorology, Technische Universit?t Dresden, Dresden, Germany 6. Applied Environmental Systems Analysis, Technische Universit?t Dresden, Dresden, Germany |
| Abstract: | This paper evaluates the remediation potential of a salinized coastal aquifer by utilizing a scenario simulation. Therefore, the numerical model OpenGeoSys is first validated against analytical and experimental data to represent transient groundwater level development and variable density saline intrusion. Afterwards, a regional scale model with a three-dimensional, heterogeneous hydrogeology is calibrated for a transient state and used to simulate a best-case scenario. Water balances are evaluated in both the transient calibration and scenario run. Visualization techniques help to assess the complex model output providing valuable insight in the occurring density-driven flow processes. Furthermore, modeling and visualization results give information on the time scale for remediation activities and, due to limitations in data quality and quantity reveal potential for model improvement. |
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