%0 Journal Article
%A Gràcia Mont, Eulalia
%A Bartolomé de la Peña, Rafael
%A Lo Iacono, C.
%A Moreno, X.
%A Stich, Daniel
%A Martínez Díaz, José J.
%A Bozzano, G.
%A Martínez Loriente, Sara
%A Perea, H.
%A Díez Tagarro, Susana
%A Masana, Eulàlia
%A Dañobeitia, J.J.
%A Tello, O.
%A Sanz, J.L.
%A Carreño, E.
%A Farran, M.
%A Andara, E.
%A Pérez, S.
%A Román Alpiste, M.J.
%T Acoustic and seismic imaging of the Adra Fault (NE Alboran Sea): in search of the source of the 1910 Adra earthquake
%D 2012
%@ 1684-9981
%U https://hdl.handle.net/20.500.14352/44923
%X Recently 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.
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