Behaviour of Tritium and Tritiogenic Helium in Freshwater Lens Groundwater Systems: Insights from Langeoog Island, Germany

Figure 4

Cross section showing the model dimensions, boundary conditions, and hydraulic parameters for the layers used in the layered simulations. Parameter values in white font were constant in all model simulations. Along the left, bottom, and right boundaries, no-flow and nondispersive flux conditions were applied. The abstraction () and recharge () time series used are shown in Figures 2(a) and 2(b), respectively. The input time series for ³H in recharge (³H_rech) and seawater (³H_sea) are shown in Figure 2(b). The fading white colour of the clay layer indicates the uncertainty about its offshore extent.