ANALYSIS OF SOCIAL VULNERABILITY IN THE FACE OF HAILSTORMS IN RIO GRANDE/RS

Abstract

Rio Grande/RS is located in subtropical latitudes with intense cyclogenetic activity, which can cause effects and damage to the population. In view of this, the objective was to elaborate and analyze the spatial distribution of social vulnerability before hail precipitation through an index elaborated in Geographic Information System (GIS). The methodological proposal aims to associate weighting factors for variables that express socioeconomic indicators (demographic density, resident people, illiteracy and financial aid applications) and urban infrastructure (water supply, electricity, sewage, presence of toilets and garbage collection) which characterize social vulnerability. The database comprises the Instituto Brasileiro de Geografia e Estatística (IBGE) and the report of those affected by hailstorms from the Municipal Civil Defense and Protection Coordination.Therefore, the methodology applied was validity through Dependency Analysis by Linear Regression to measure the dependency between the vulnerability index and claims for assistance. The results show that the very high socioeconomic vulnerabilities are located in the west of the city and in the industrial district, and those classified as high were identified in all districts of the municipality, with emphasis on the western portion. The methodological process presented reliability in 63% of the vulnerability in the Census Sectors.