HAZARD ESTIMATION FOR LANDSLIDES TRIGGERED BY EARTHQUAKES AND RAINFALL (ABURRÁ VALLEY-COLOMBIA)

HAZARD ESTIMATION FOR LANDSLIDES TRIGGERED BY EARTHQUAKES AND RAINFALL (ABURRÁ VALLEY-COLOMBIA)

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César Augusto Hidalgo
Johnny Alexánder Vega

Abstract

This article presents a hazard estimation for landslides triggered by earthquakes and rainfall in the Aburrá Valley in Colombia using a geographic information systems (GIS) platform. To carry out the estimation, a model that considers the topographical, geological, geotechnical, and hydrological characteristics of the studied area was developed. The model used is based on the Newmark’s pseudostatic model and uses a probabilistic approach based on the technique of first order and second moment -FOSM-. The process calculates the probability of occurrence of a landslide triggered by an earthquake that produces an acceleration (Ah), considering the uncertainty of the geotechnical parameters and conditions of soil saturation.

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Author Biographies ##ver##

César Augusto Hidalgo, Universidad de Medellín

Civil Engineer, PhD in Geotechnical. Professor Faculty of Engineering, Civil Engineering program, Universidad de Medellín.

Johnny Alexánder Vega, Universidad de Medellín

Civil Engineer, Master in Geomatics. Professor Faculty of Engineering, Civil Engineering program, Universidad de Medellín.