Resumen

JAIMES, Miguel A.; NINO, Mauro  y  REINOSO, Eduardo. Una aproximación para la obtención de mapas de desplazamiento traslacional de laderas a nivel regional inducido por sismos. Ing. sísm [online]. 2013, n.89, pp.01-24. ISSN 0185-092X.

We propose to obtain translational landslides due to earthquake in Mexico estimating Newmark displacements in terms of the relationship between the critical acceleration, a_c (the peak ground acceleration threshold to start the landslide) and the peak ground acceleration, a_max. With the obtained results from a proposed displacement equation it is possible to define a translational landslide map at regional level induced by earthquakes. Soil parameters such as cohesion, volumetric weight and angle of friction are inferred from geological maps, scale 1:1'000,000, and a digital elevation map is employed to obtain the slope of the potential landslide. We present a landslide hazard map for Mexico associated to a peak strong ground motion acceleration with a return period of 150 years at regional level, and an example map of displacements triggered by the Tecoman earthquake with M=7.6 occurred in January 21st, 2003; this case is compared with results from the Mora-Vahrson method which is widely used to obtain landslide hazard maps.

Palabras llave : translational landslide maps; Newmark displacement; seismic intensity; landslide hazard assessment.

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