1. Centre for Hydrogeology and Geothermics; University of Neuchâtel; CP 158 CH-2009 Neuchâtel Switzerland
2. Institute of Applied Geosciences, Division of Hydrogeology; Karlsruhe Institute of Technology (KIT); D-76131 Karlsruhe Germany
3. Université de Lyon, Université Jean Monnet, CNRS, UMR 6524; LMV F-42023 Saint Etienne France
4. Université Clermont-Ferrand 2; Laboratoire Magmas et Volcans; Clermont-Ferrand France
5. Soil and Vegetation Laboratory; Neuchâtel University; CP 158 CH-2009 Neuchâtel Switzerland