Recent hydrological variability and flood events in Moroccan Middle-Atlas mountains : micro-scale investigation of lacustrine sediments

Guillaume Jouve (1) , L. Vidal (1) , Rachid Adallal (2) , E. Bard (1) , Abdel Benkaddour (3) , Emmanuel Chapron (4) , T. Courp (5) , Laurent Dezileau (6) , B. Hebert (5) , A. Rhoujjati (7) , Anaëlle Simonneau (8, 9) , Corinne Sonzogni (1) , Florence Sylvestre (1) , Tachikawa Kazuyo (1) , F. Rostek (1) , E. Viry (1)

1 Collège de France - Chaire Evolution du climat et de l'océan
2 Faculté des Sciences Semlalia [Marrakech]
3 LGR - Laboratoire de Géo-ressources, Unité associée au CNRST (URAC 42)
4 GEODE - Géographie de l'environnement
5 CEFREM - Centre de Formation et de Recherche sur les Environnements Méditérranéens
6 Géosciences Montpellier
7 FSTG - Faculté des Sciences et Techniques Marrakech
8 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
9 Biogéosystèmes Continentaux - UMR7327

Since the 1990s, the Mediterranean basin undergoes an increase in extreme precipitation events and droughts likely to intensify in the XXI century (IPCC, 2013). Regional climate models indicate a strengthening of flood episodes at the end of the XXI century in Morocco (Tramblay et al, 2012). To understand the recent hydrological variability in North Africa, our study focuses on geochemical and microsedimentological analysis of a short sedimentary sequence from Azigza lake (Fig. 1; 2). This endoreic lake is located in the Middle Atlas karst system.

Mots clés: Hydrology; floods; lacustrine sediments; Morocco

Domaines: Géographie; Hydrologie; Géochimie; Géologie appliquée

Guillaume Jouve, L. Vidal, Rachid Adallal, E. Bard, Abdel Benkaddour, et al.. Recent hydrological variability and flood events in Moroccan Middle-Atlas mountains : micro-scale investigation of lacustrine sediments. European Geosciences Union, Apr 2016, Vienne, Hungary. ⟨hal-03161010v1⟩