MAPEAMENTO DA SUSCETIBILIDADE NATURAL A MOVIMENTOS DE MASSA PARA A BACIA HIDROGRÃFICA DO RIO ANIL, SÃO LUÃS – MA

Abstract

In urban areas to evaluate landslide risks requires knowledge about the conditions that affect the slope stability. The objective of this work was to map mass movement susceptibility across Rio Anil watershed in São Luis city at Maranhão state of Brazil. For this, were applied a spatial modelling methodology based in Fuzzy logic. Were used a dataset composed by thematic map of geology, geomorphology, soil type and numerical data of slope and terrain shape. The map resultant of this study showed that mass movement area with moderate susceptibility corresponds to most of study area. It would be explained due to high population density and vegetation cover suppression.

 

 

Index Terms - Land degradation, urban growth, spatial modelling.