Historical extreme events in coastal depositional environments

• Main Author: Pouzet, Pierre
• Other Authors: Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes ), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), International Association of Geomorphologists (IAG)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2022
• Subjects: [SDE.ES]Environmental Sciences/Environment and Society; [SDE.MCG]Environmental Sciences/Global Changes; [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces; environment; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SHS.GEO]Humanities and Social Sciences/Geography; North Atlantic; North Atlantic oscillation
• Online Access: https://hal.science/hal-03596540

International audience In the context of climate change, studying coastal risks involves the hazard’s historical fluctuations to understand the ocean-climatic parameters that guide its variability. The talk focuses on the detection of historical extreme events in coastal depositional environments. Surveys in western France highlight threestormy periods at approximately 1330-1360 AD, 1570-1620 AD and 1690-1720 AD. They are part of climate pejoration phases; storm activity appears to increase during positive phases of North Atlantic Oscillation, but no strict correlations can be established. A dendrochronological approach is suggested to extract recent storms impacting dune stands in coastal environments.