1 Institute for Water Management, Hydrology and Hydraulic Engineering, Department for Water - Atmosphere - Environment, BOKU - University of Natural Resources and Life Sciences Vienna, Muthgasse 107, 1190 Vienna, Austria. Electronic address: [email protected].
2 Laboratory of Hydraulics, Hydrology and Glaciology, (VAW) ETH, Zürich, Switzerland.
3 Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123, Trento, Italy.