Hydrochemical and isotopic characterisation of deep groundwater reservoirs in the Sahara desert

(1) TU Graz, Applied Geosciences, Graz, Austria (koehler@tugraz.at), (2) JOANNEUM RESEARCH Forschungsgesellschaft mbH, Institute of Water Resources Management (WRM) Hydrogeology and Geophysics, Austria, (3) Leibniz Institute for Baltic Sea Research, Warnemunde, Germany, (4) Max Planck Institute for Marine Microbiology, Bremen, Germany, (5) CNRS, Institut National des Sciences de l’Univers, France, (6) Laboratoire de Glaciologie et de Geophysique de l’Environnement, Universite Joseph Fourier (UJF), Grenoble, France