Análisis de susceptibilidad de movimientos de masa en la zona central del tramo Chanlud-Tuñi en el complejo hidroeléctrico Machángara

Abstract

This study examines landslide susceptibility in the upper basin of the Machángara River, analyzing how factors such as topography, geology, soil moisture, precipitation, and seismic activity impact terrain stability. The Mora and Vahrson methodology was employed, complemented by an adapted approach incorporating the Topographic Wetness Index (TWI), which allowed for the identification of areas more prone to moisture accumulation and its effects on stability. The results showed that 15% of the surface area has high susceptibility, corresponding to locations where previous landslides have been recorded, while the majority of the area (60%) is classified as having medium susceptibility, indicating favorable conditions under certain circumstances. Human activity, particularly land manipulation, further increases susceptibility in several zones. Additionally, moisture was identified as a critical factor in the area, as its accumulation and spatial distribution play a key role in terrain instability. Based on the findings, susceptibility maps were generated to facilitate the identification of vulnerable áreas.