1. Centre for Hydrogeology and Geothermics University of Neuchâtel Neuchatel Switzerland
2. Now at Mountain Research Initiative c/o University of Bern Bern Switzerland
3. Department of Geology and Geological Engineering University of Laval Quebec City Quebec Canada
4. Institute of Earth Surface Dynamics University of Lausanne Lausanne Switzerland
5. Institute of Earth Sciences University of Lausanne Lausanne Switzerland