1. Geological Survey of Denmark and Greenland (GEUS); Copenhagen; Øster Voldgade 10 Copenhagen K 1350 Denmark
2. Department of Geosciences and Natural Resource Management; University of Copenhagen; Øster Voldgade 10 Copenhagen K 1350 Denmark
3. Laboratoire Morphodynamique Continental et Côtière; University of Caen Lower Normandy; UMR CNRS 6143; 2-4 rue des Tilleuls Caen 14000 France