Analysis of rainfall triggering mass movements in Angra dos Reis – RJ

Abstract

One of the ways to reduce risks related to mass movements is to improve warning systems that use rainfall data to estimate the probability of one or more mass movements causing damage. Technical surveys carried out by DRM-RJ (2015) in the municipality of Angra dos Reis, indicated that a representative portion of the residences were in areas with soil susceptible to the occurrence of mass movements. Data from IBGE (2018) show that the municipality of Angra dos Reis had in 2010, 39% of the population living in areas considered at risk (related to mass movements and floods). Given this scenario, the public authorities have great difficulty in improving existing conditions or even relocating homes to safe areas in a short period of time. This situation indicates the need to improve the monitoring and warning systems of mass movement-related disasters in order to reduce the losses caused by disasters.

DOI:https://doi.org/10.56238/sevenIIImulti2023-148