Uma proposta para o monitoramento de processos erosivos por voçorocamento com o uso de RPAS, na bacia do rio Iriri nos períodos de 2020 e 2022

Abstract

Erosive processes are visible along the Earth's surface and are widely studied. These processes impact different areas of society, therefore, in addition to being of social interest, the analyzes and studies of these processes are of great economic interest, since they serve as forecasts and can help with planning and management issues. Constant technological evolution has influenced studies aimed at developing methodologies aimed at monitoring and representing these processes, which are increasingly relevant for environmental management and planning. In this context, the objective of this research is the methodological contribution for the monitoring of erosion processes by gullying, from the use of the Remotely Piloted Aircraft System (RPAS). To achieve this objective, two fields were carried out, with different techniques, being used as a tool for analysis and data processing, Agisoft Metashape Professional, ArcGIS, QGIS and the R language. Aerial surveys with RPAS were carried out in 2020 and 2022, in which different methods were adopted, which are described in the results and final considerations. As a result, volumes were obtained for the years 2020 and 2022, the extraction of longitudinal and transverse profiles, in addition to a height variation model. This set of results made it possible to verify the advance of the gully, as well as the regions of these advances.