Estudio de la precipitación como factor causante de los movimientos en masa, en el municipio de Toledo-Norte de Santander proyecto SGC – bloque 03 convenio 034.

Abstract

Rains, unsustainable land use, deforestation, lack of protection of water sources, alteration of water currents, mining activity and soil structure; They are the most frequent triggers of mass movements in the national territory, populations being affected due to the lack of preparation and knowledge of these phenomena, the little investment of the state in prevention. One of the main disadvantages is that there is no information on mass movements based on specific events that are not established in the relationships between the activation date, the mass movement and its identified characteristics. That is why a study was carried out whose purpose was to determine precipitation as a factor causing mass movements, in the municipality of Toledo north of Santander, the methodology used that was applied, was obtained from the threat guide for mass movements 1: 25,000 scale of the Colombian Geological Service, a database of mass movements was built, based on the collection of secondary information and used meteorological stations in the study area, which were downloaded into daily precipitation databases Subsequently, a climatic analysis of the area was obtained. Through the information obtained, the accumulated antecedent or long-term rain -LAA- (1,3,5,15 days and 1 year) was determined for each mass movement, resulting in the characterization of the sidewalks where they affect these phenomena, the months in which they occur, present the highest probability that a mass movement can be detonated.