Mapeamento geológico/geomorfológico com o uso de geotecnologias do domínio Vaza Barris, faixa de dobramento sergipana

Abstract

This work presents a geological/geomorphological analysis in the scale of 1: 100,000 of Domain Vaza Barris, using geoprocessing techniques, with the purpose of delivering data to geo-environmental planning. The study area is represented by the Vaza Barris Domain which displays a gneissic complex surfacing in two emplacements, being surrounded by a metavolcano-sedimentary cover highly deformed. This work is the mapping and the application of satellite imagery fusion techniques Landsat 8 with SRTM methodology data for the geological and geomorphological analysis by homologous zones and the use of RapidEye images to the classification of the Land Use employing the Index Normalized Difference vegetation (NDVI). As a result there was the development of the geological/geomorphological partitioning of the Vaza Barris domain, were generated the Digital Terrain Model, Shaded Relief, Contour, Topographic profiles, Slope maps, Hypsometric map and Anaglyph. The integration between the interpretations of Landsat 8, SRTM and field data allowed the identification of seven types of geomorphological modeled in the study area: Modeled of grooming Shanty be buried, Modeled of dissection Homogeneous tops Keen, Modeled of dissection Homogeneous tops Convex, Patterned Accumulation in ramps Colluvium, Modeled Dissection of Structural tops convex, Modeled of pediments and Modeled of grooming Retouched be buried. From the NDVI was generated the Land Use map where the pixels were grouped into classes of values and classified as: Clouds, Solo Exposed, Pasture / built-up areas, water bodies, shrub and tree vegetation. This work achieved important results with the use of geotechnology in making the Geological/ Geomorphological Map and the Land Use Map to provide support in environmental planning Vaza Barris Domain.