1. (IAHR Member), PhD Student, Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Hönggerbergring 26, 8093 Zürich, Switzerland(author for correspondence)
2. (IAHR Member), Senior Research Assistant, Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Hönggerbergring 26, 8093 Zürich, Switzerland
3. (IAHR Member), Head Numerical Modelling Group, Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Hönggerbergring 26, 8093 Zürich, Switzerland
4. (IAHR Member), Professor, Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Hönggerbergring 26, 8093 Zürich, Switzerland