1. University of Aberdeen, School of Geosciences, Aberdeen, U.K.
2. Institute of Marine Sciences, ISMAR-CNR, Bologna, Italy
3. Consorzio ProAmbiente, Bologna, Italy
4. Research Centre for Constructions, Fluid Dynamics Unit, University of Bologna, Bologna, Italy
5. Agenzia Interregionale per il Fiume Po, AIPO, Settore Navigazione Interna, Parma, Italy
6. Department of Civil, Chemical, Environmental and Material Engineering, University of Bologna, Bologna, Italy
7. Rice University, Department of Earth, Environmental, and Planetary Sciences, MS-126, Houston, Texas 77005, U.S.A.