Determinación del período de retorno de sismos históricos en Ecuador.

Abstract

This work consists of determining the return period of historical earthquakes that occurred in provincial capitals of Ecuador from the year 1541. It was based on the investigations of the geophysicist José Egred, who dedicated most of his life to the study of historical earthquakes of Ecuador considering the intensities greater than or equal to VIII on the Modified Mercalli scale, based on the maximum intensities the Aguiar acceleration attenuation equations are related, and it is linked in function with gravity to obtain the surface acceleration AH (g), it is important to know the characterization of the soil type where the earthquake occurred to determine the soil amplification coefficient in the short-period zone found in the NEC-15 and thus perform the calculation of the maximum acceleration in rock expected taking reference to the seismic hazard curves according to the NEC-15 for the calculation of the return period of historical earthquakes and its types of seismic threats.