1. Institute of Environmental Social Sciences and Geography University of Freiburg Freiburg Germany
2. Department of Geography University of Bonn Bonn Germany
3. Institute of Photogrammetry and Remote Sensing, Technische Universität Dresden Dresden Germany
4. Geocryology, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales, CCT CONICET Mendoza Argentina