Identificação das áreas urbanas no estado do Rio Grande do Sul para uso direto das estações de RBMC como vértice de controle

Abstract

This study aimed to identify potential urban areas in the state of Rio Grande do Sul for the direct use of RBMC (Brazilian Continuous Monitoring Network) stations as control points. It also sought to quantify and map urban areas that can be surveyed with tracking times of up to 5, 15, and 30 minutes in the state. To achieve this objective, geoprocessing tools were used for proximity analysis (buffer) and overlay analysis (intersection), and all spatial analysis was performed using ArcGIS software. With a 5 km buffer, only the city of Cerro Largo had its entire territory located more than 5 km away from an RBMC station. However, with 10 km buffer, several locations had their entire areas within a radius of 10 km from an RBMC station. These locations include: Alegrete, Pains, Cerro Largo, Salvador das Missões, São Francisco, Esteio, Sapucaia do Sul, Passo do Sabão, and Viamópolis. When considering a 20 km buffer, it was found that the areas of all cities in Rio Grande do Sul with installed RBMC stations are located within 20 km of an RBMC station, except for the city of Porto Alegre, which has approximately 94.6% of its territory within this distance from an RBMC.