Hydroclimatic variability record from the Cabo Frio coast (Rio de Janeiro, Brazil) during the last 6500 yr.

Bérengère Laslandes (1, 2, 3, 4) , Florence Sylvestre (3, 1, 4) , Abdel Sifeddine (4) , Bruno Turcq (4, 5) , Ana Luiza Spadano Albuquerque (5) , Jorge Abrao (5)

1 laboratoire d'études des bio-indicateurs actuels et fossiles
2 LEBIM
3 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
4 PALEOTROPIQUE - Paléo-environnements tropicaux et variabilité climatique
5 UFF - Universidade Federal Fluminense [Rio de Janeiro]

This study concerns a core collected in Brejo do Espinho's lagoon from Cabo Frio littoral (Brazil) submitted to dry influence of local upwelling controlled by north-cast trade winds from the South Atlantic and particularly strengthened during El Nino events. Diatoms study supported by sedimentological and isotopic analyses shows dry phases infrequent before 4000 yr, a highly variable climatic phase between 3600 and 2900 yr and from 2400 yr onward a dryness enhancement.

Domaines: Sciences de la Terre

Bérengère Laslandes, Florence Sylvestre, Abdel Sifeddine, Bruno Turcq, Ana Luiza Spadano Albuquerque, et al.. Hydroclimatic variability record from the Cabo Frio coast (Rio de Janeiro, Brazil) during the last 6500 yr.. Comptes Rendus Géoscience, 2006, 338 (10), pp.667-675. ⟨10.1016/j.crte.2006.05.006⟩. ⟨hal-01795361⟩