Zonificación de la Amenaza por Fenómenos de Remoción en Masa en el Barrio Atacaba, noroccidente del Distrito Metropolitano de Quito

Abstract

The present study was developed in the Atacaba neighborhood, located at north-west of the Metropolitan District of Quito and is focused on the Landslide Hazard Zonation, applying the Newmark Methodology, (1965). The Newmark Methodology is based on movement of a block that slides on an inclined plane, it allows the calculation of the displacements of lands during rains and earthquakes. The Factor of Safety (FS) it is considers as the main parameter of the methodology, this factor is defined by the intrinsic properties of the slopes such as geology, geotechnics and topography. The Newmark Displacements were obtained based on the logarithmic formulation with the pseudo-static parameter Critical Aceleration and the seismic parameter of the Arias Intensity. The Newmark Displacement Maps represent the Zonation of Hazard by landslides, showing the levels of hazard induced for rains and earthquakes of determined characteristics. The methodology was calibrated with the Susceptibility Map and Mass Movement Inventory (IMM).