Mapeamento de voçorocas na cidade de Rio Preto da Eva (AM)

Abstract

This work had as main objective to map the gullies of the urban perimeter of the city of Rio Preto da Eva, in Amazonas. It is worth mentioning that these are erosive features that are characterized by having a great impact on the landscape, especially in urban environments. The registration form and the images generated by UAVs processed using the Agisoft Metashape software were used as tools. The extraction of geomorphometric data was performed using the Alos Palsar image, in which they were processed in the Arcgis 10.5 software to obtain hypsometry, contour lines and slope. The results indicate the existence of 3 gullies that add up to an area of more than 5,254.42 m2 and an eroded volume of more than 89,000 m3. Due to the characteristics observed in the field, it was found that these are quite active, and indicate risks for the population in their surroundings.