SIG Model for zonation of slope instability hazard - Case study: Metropolitan area of Monterrey, Mexico Modelo SIG para la zonificación de peligro por inestabilidad de laderas - Caso de estudio: Área metropolitana de Monterrey, México
Academic Article in Scopus
The number of landslide events and rockfalls have been increasing during the last decades in the Metropolitan Area of Monterrey (AMM) that had been considered as a vulnerable area to mass removal processes due to the accelerated urbanization process. The population, that has now 4 million inhabitants, continues to increase, as well as the pressure for new developments that modify the topography, changes the land use and therefore, interfere with the flows and course of r unoff, decreasing the levels of infiltration and representing the detonating factors for the generation of mass removal. For this project, slope instability was modeled using a GIS that incorporated the topographic factors (obtained from the digital elevation model, with a scale at 1 m, obtained from the classification of a LIDAR flight) as well as geotechnical and environmental factors. In addition, other official environmental factors available on-line were obtained such as soil use, surface hydrological cur rents, litholog y, structural geological data and roads provided in vector for mat. The model was made through a linear sum of the reclassification of the layers, zonification the levels of danger by instability of slopes. The result is a mass-scale hazard map on the middle scale of the City of Monterrey, which ser ves as the basis for identifying areas where specific studies are required. The result is a map of (1: 10.000-1: 50.000) mass movement hazard of the City of Monterrey, which ser ves as the basis for identifying areas where specific studies are required.
