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The aim of this study is to identify the presence of roughness and / or clusters of earthquakes from space-time distribution of seismicity surface occurred in southern Peru between coordinates 13 ° -19 ° South and 69 ° -78 ° West . This study has used the catalogue National Earthquake Information Center (NEIC) (1976 - 2005), with 696 earthquakes focus surface (h <70 km.) And magnitude of at least 4.5 Mb. The restriction data, is when its maximum depth because it is estimated that the depth of 60 km. is the limited contact between the surfaces of the Nasca and South American plates in the process of subduction (Heras, 2002). It eliminated minor earthquakes of magnitude 4.5 Mb, because not being registered in a large number of stations of the global network, its parameters hipocentrales are not of good quality. Also, it proceeded to remove replicas of large earthquakes assuming a temporal distribution of 20 days.

Características espacio – tiempo de la sismicidad superficial en la región sur de Perú durante el período de 1976 a 2005