1. Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden
2. Centre of Natural Hazards and Disaster Science (CNDS), Villavägen 16, 752 36 Uppsala, Sweden
3. Institute of Hydraulic Engineering and Water Resources Management, Technische Universität Wien, Karlsplatz 13/222, 1040 Vienna, Austria