1. CEFREM, UMR CNRS 5110 Université de Perpignan Via‐Domitia Perpignan France
2. Risks and Prevention Division BRGM French Geological Survey Orléans France
3. Regional Direction Nouvelle‐Aquitaine, BRGM French Geological Survey Orléans France
4. CNRS, UMR 5805 EPOC Université de Bordeaux Pessac France
5. Beach and Dune Systems (BEADS) Laboratory, College of Science & Engineering Flinders University Adelaide Australia
6. Office National des Forêts Paris France