MAPEAMENTO DIGITAL DE FORMAS DE RELEVO NO AMBIENTE COSTEIRO DO PARANÁ

Abstract

The relief forms of the coastal regions frequently present a challenge to the geomorphological mapping methods, mainly due to the gentle topographic features. Thus, the digital mapping was carried out in a coastal area located on the coast of Paraná, where extensive coastal plains are associated with the Serra do Mar range. The analysis used a composition between Relief Digital Mapping, supported by the analysis of the geomorphometric attributes derived from a Digital Terrain Model, and Digital Image Processing, by analyzing the spectral differences of the vegetation humidity levels. In this way it was possible to identify several forms of relief (Hills,  Plains, Terraces, Ramps, etc.) on a 1:25,000 scale. Therefore, the most significant result of this work was a new semi-automated method of geomorphological mapping, effective (98%) in identifying features of different topographic amplitudes.