Abordagem metodolótica para extração de estruturas a partir de dados de radar (SRTM+) na região da Jazida de P-U de Itataia - CE

Abstract

The use of remote sensing in the evaluation of geological targets has an important contributions in mapping studies. Therefore, image analysis, considered as pre and post-stage field, has fundamental importance in geological interpretations. Lineament is a mappable feature on the Earth's surface, linear, straight or slightly curved. This work aims to verify the integrity of the data made by the automatic lineament extraction method, in order to complement the manual method. The digital elevation model (DEM) used was SRTM+ and the software to extract lineaments automatically was Geomatica 2016. The methodology used to generate the multidirectional hillshade was efficient, making the work faster, as the processing method was necessary only once. With the multi-directional hillshade, the output made by the edge detection method used by the software was acceptable and according with the geological setting. The data collected on the field was relevant as a parameter of comparison. The difference between the amounts of lineaments generated in the automatic method and in the manual method should bemore investigated.