Sensitivity of beach morphodynamics to climate variability. Application to truc vert beach (France)

Déborah Idier (1) , Faïza Boulahya (1) , Olivier Brivois (2, 3) , Bruno Castelle (4) , Philippe Larroudé (5) , Emmanuel Romieu (1) , Gonéri Le Cozannet (1) , Etienne Delvallée (1) , Jérôme Thiebot (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
2 UR OHAX - Ouvrages hydrauliques et hydrologie
3 LMA - Laboratoire de Mécanique et d'Acoustique [Marseille]
4 EPOC - Environnements et Paléoenvironnements OCéaniques
5 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

Coastal systems should be vulnerable to climate change/variability. The present paper investigates the sensitivity of Truc Vert beach to present day climate conditions as well as possible climate change in the near future. A modeling approach is used, based on three numerical morphodynamic models (MORPHODYN, MARSOUIN, TELEMAC). The first results show an important sensitivity to present day wave classes. Some first indications on the potential influence of wave climate changes are also given, investigating variations of wave classes characteristics. The present work also illustrates the need to go on improving and developing these models.

Keywords: morphodynamics; model; Truc Vert; France

Domains: Sciences of the Universe [physics]; Earth Sciences; Oceanography

Déborah Idier, Faïza Boulahya, Olivier Brivois, Bruno Castelle, Philippe Larroudé, et al.. Sensitivity of beach morphodynamics to climate variability. Application to truc vert beach (France). Coastal Sediments 2011, May 2011, Miami, United States. ⟨hal-00581435⟩