Results of Model Calculations

Model runs are called “base-case” calculations if the simulations explain the measured data reasonably well with input parameters and scenarios that are within the independently derived ranges. All base cases consider diffusion as the only transport process – not by definition but due to the observation that adding advection does not improve the model fits to the data. In contrast, “scoping” or “alternative” models refer to cases that purposely deviate from known palaeo-hydrogeological scenarios and ranges of input parameters, or to cases that are not sufficiently well constrained by independent information and therefore remain on a hypothetical level. 