OREGIONI , Davide

Lophelia pertusa and Madrepora oculata are the two main species building cold-water coral reefs. Habitats within cold-water coral reefs ecosystems such as the water column, sediments, coral rubble, sponges and other corals host a diverse archaeal community. However, L. pertusa and M. oculata host, if at all, a different archaeal community. The...

International audience

L'action spécifique Sismologie Marine Mobile (SMM) a été créée au sein de Résif. Les 3 parcs OBS français se sont fédérés pour offrir une instrumentation marine de pointe pouvant répondre aux besoins des chercheurs. Le projet d'investissement d'avenir Marmor, financé par l'ANR (PIA3-ESR-Equipex+), permet l'achat et la jouvence d'instruments de...

The North Anatolian Fault (NAF) is a >1200 km-long continental strike-slip fault system, acting as the plate boundary between Eurasia and Anatolia. West of the Yeniçaga fork in Turkey, the NAF divides in two main strands: the Main Marmara Fault crossing the Marmara Sea to the North, and a southern branch of the NAF crossing the Biga Peninsula....

The Mw 8.8 1906 earthquake that occurred at the Ecuador-Colombia subduction zone is the 7th largest event ever recorded worldwide, and one of several large earthquakes that have affected the region since then.At its southern border, episodes of aseismic slip have been recorded at the shallow updip part of the subduction interplate fault, in the...

International audience

The Ecuadorian subduction regularly hosts large earthquakes. Among them, the Mw 8.8 1906 earthquake is the 7th biggest known event. Following the recent 2016 Mw 7.8 Pedernales earthquake, a large deployment of onshore/offshore seismological stations, in addition to the permanent seismological/geodetical network, revealed a complex slip behavior...

Based on manually analyzed waveforms recorded by the permanent Ecuadorian network and our large aftershock deployment installed after the Pedernales earthquake, we derive three- dimensional Vp and Vp/Vs structures and earthquake locations for central coastal Ecuador using local earthquake tomography. Images highlight the features in the...

La campagne SEAGAL est demandée sur la marge nilotique à bord du NO Marion Dufresne par l'UMR Géoazur en collaboration avec des partenaires français (Universités de Nice Sophia Antipolis, UPMC et Université Bordeaux1, Ifremer), Brésiliens (PUCRS-IPR), Allemands (Jacobs University Bremen), Italiens (OGS) et Egyptiens (Université d'Alexandrie)....