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Reappraisal of great historical earthquakes in the northern Chile and southern Peru seismic gaps
Authors:Diana Comte  Mario Pardo
Institution:(1) Departamento de Geologia y Geofisica, Division de Geofisica, Facultad de Ciencias Fisicas y Mathematicas, Universidad de Chile, Casilla 2777, Santiago, Chile
Abstract:A critical reappraisal of great historical interplate earthquakes in the occidental margin of South America, including southern Peru and northern Chile, is carried out.A spacetime distribution of the earthquakes associated to the seismotectonics regions defined by the rupture zones of the greatest events (1868, Mw = 8.8 and 1877, Mw = 8.8) is obtained. Both regions are seismic gaps that are in the maturity state of their respective earthquake cycles. The region associated to the 1868 earthquake presents a notable seismic quiescence in the present century.
Keywords:Northern Chile and Southern Peru seismic gaps  historical seismicity  rupture length  estimated magnitudes
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