Gràcia Mont, EulaliaBartolomé de la Peña, RafaelLo Iacono, C.Moreno, X.Stich, DanielBozzano, G.Martínez Loriente, SaraPerea, H.Martínez Díaz, José JesúsDíez Tagarro, SusanaMasana, EulàliaDañobeitia, J.J.Tello, O.Sanz, J.L.Carreño, E.Farran, M.Andara, E.Pérez, S.Román Alpiste, M.J.2023-06-202023-06-2020121684-9981https://hdl.handle.net/20.500.14352/44923Recently acquired swath-bathymetry data and high-resolution seismic reflection profiles offshore Adra (Almería, Spain) reveal the surficial expression of a NW–SE trending 20 km-long fault, which we termed the Adra Fault. Seismic imaging across the structure depicts a subvertical fault reaching the seafloor surface and slightly dipping to the NE showing an along-axis structural variability. Our new data suggest normal displacement of the uppermost units with probably a lateral component. Radiocarbon dating of a gravity core located in the area indicates that seafloor sediments are of Holocene age, suggesting present-day tectonic activity. The NE Alboran Sea area is characterized by significant low-magnitude earthquakes and by historical records of moderate magnitude, such as the Mw = 6.1 1910 Adra Earthquake. The location, dimension and kinematics of the Adra Fault agree with the fault solution and magnitude of the 1910 Adra Earthquake, whose moment tensor analysis indicates normal-dextral motion. The fault seismic parameters indicate that the Adra Fault is a potential source of large magnitude (Mw = 6.5) earthquakes, which represents an unreported seismic hazard for the neighbouring coastal areas.engAtribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/journal articlehttp://www.nat-hazards-earth-syst-sci.net/12/3255/2012/open access550.34(460.358)AdraAlmeríaSpainEarthquakeGeodinámica2507 Geofísica