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Title

Regional centroid moment tensors for earthquakes in the 2016 South Alboran seismic crisis

AuthorsGràcia, Eulàlia ; Grevemeyer, Ingo; Bartolomé, Rafael ; Perea, Héctor ; Martínez-Loriente, S. ; Gómez de la Peña, L. ; Villaseñor, Antonio ; Klinger, Yann; Lo Iacono, Claudio ; Díez Tagarró, Susana ; Calahorrano, Alcinoe ; Camafort Blanco, Miquel; Costa, Sergio ; D'Acremont, E.; Rabaute, Alain; Ranero, César R.
KeywordsFocal mechanisms
Regional moment tensors
Alboran Sea
Issue Date2019
CitationGràcia, Eulàlia ; Grevemeyer, Ingo; Bartolomé, Rafael ; Perea, Héctor ; Martínez-Loriente, S. ; Gómez de la Peña, L. ; Villaseñor, Antonio ; Klinger, Yann; Lo Iacono, Claudio ; Díez Tagarró, Susana ; Calahorrano, Alcinoe ; Camafort Blanco, Miquel; Costa, Sergio ; d’Acremont, Elia; Rabaute, Alain; Ranero, César R.; 2019; "Regional centroid moment tensors for earthquakes in the 2016 South Alboran seismic crisis [Dataset]"; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/8623
AbstractData files and modelling results of regional centroid moment tensors obtained for earthquakes in the 2016 South Alboran seismic crisis, and presented in the article "Earthquake crisis unveils the growth of an incipient continental fault system", by Eulàlia Gràcia et al. Large continental faults extend for thousands of kilometres to form boundaries between rigid tectonic blocks. These faults are often associated with prominent topographic features, and they can produce large earthquakes. Here we present first evidence of such a major tectonic structure in its initial growing stage, the Al-Idrissi Fault System (AIFS), in the Alboran Sea. Until now, this fault system had always been described as a complex diffuse boundary between Eurasia and Nubia plates. However, combining newly acquired high-resolution bathymetric and seismic reflection data, together with seismological analyses of the 2016 Mw 6.4 earthquake offshore Morocco – the largest event ever recorded in the area – we unveil a 3D geometry for the AIFS, which definitively correspond to a crustal-scale boundary. We report evidence of left-lateral strike-slip displacement, characterize fault segmentation and demonstrate that the AIFS is the source of the 2016 events. The occurrence of the Mw 6.4 earthquake together with historical and instrumental events supports that the AIFS is currently growing through propagation and linkage of its segments. Thus, the AIFS provides a unique model for inception and growth of a young continental fault system.
DescriptionLos datos constarían de 24 directorios, uno para cada terremoto con los datos brutos, procesados, y resultados. Se pueden comprimir/empaquetar en un archivo tar. El contenido se describe en el archivo README.
URIhttp://hdl.handle.net/10261/177887
DOIhttp://dx.doi.org/10.20350/digitalCSIC/8623
ReferencesAssociated article: "Earthquake crisis unveils the growth of an incipient continental fault system", Nature Communications, volume 10, Article number 3482 (2019) http://hdl.handle.net/10261/191278
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