Mapeamento dos índices de sensibilidade fluvial a derrames de óleo no município de Monte Alegre, PA, Brasil, a partir do processamento de imagens rapideye

Abstract

Accidents involving the spilling of oil into water bodies affect both the environment and the socioeconomic resources of the local population. In this sense, the results of this dissertation intends to corroborate in the identification of physical environments more sensitive to oil contamination applying a classification of environmental sensitivity indexes to oil for fluvial environments (ISF). In this study, the river system of the municipality of Monte Alegre (Pa) was mapped, in which field surveys were performed in two seasons: rainy and dry, with collection of sedimentary samples and surveys of marginal geomorphological and geological characteristics, which were recorded with photos. A land use and vegetation cover map, classified in the e-Cognition software and Kappa index of 85%, corroborated the ISF classification, which allowed us to identify that the index 10b, characterized by flooded vegetation and alluvial deposits, was present in 245.02 km2 of the studied area, which corresponds to 61.43% of the total, being the most recurrent in the study area considered with high environmental sensitivity to oil.