Author/Authors :
BENSAID, Ihsane Université Mohammed V-Agdal - Institut Scientifique, Ecole Mohammedia d’Ingénieurs - Département des Sciences de la Terre, Laboratoire de Physique du Globe, Equipe Sismologie et Magnétisme, Maroc , BUFORN, Elisa Universidad Complutense - Departamento de Geofisica y Meteorologia, Spain , CHERKAOUI, Taj-Eddine Université Mohammed V-Agdal - Institut Scientifique - Département des Sciences de la Terre, Maroc , MEDINA, Fida Université Mohammed V-Agdal - Institut Scientifique - Département des Sciences de la Terre, Laboratoire de Géologie et Télédetection (associé CNRST URAC 46), Equipe Télédétection, Ressources et Risques naturels, Morocco , HAHOU, Youssef Institut National de Géophysique - Centre National pour la Recherche Scientifique et Technique, Morocco
Abstract :
We present new fault-plane solutions, based on P wave first motion, of 10 moderate shocks that occurred in Morocco during the period 2005-2008. In the Middle Atlas and adjacent area, the 3 fault-plane solutions correspond either to reverse or to strike-slip faulting with a normal component, in good agreement with the state of stress determined in this area, reflected by NW-SE horizontal pressure axes. In the central and eastern Rif area, the 3 strike-slip and normal solutions (with ENE-WSW T-axes) are in agreement with the local state of stress. Finally, in the western Rif front, which is undergoing increased seismic activity, the 2 fault-plane solutions obtained (reverse faulting) show unusual NE-trending P-axes that support the model of lateral escape of the Central Rif.
NaturalLanguageKeyword :
Seismotectonics , Morocco , fault , plane solution
