Proposta metodológica para a classificação de unidades de relevo na porção central da planície costeira do Paraná - Brasil

Abstract

The landforms of coastal regions often represent a challenge to geomorphological mapping methods, mainly due to the smoothness of the topographic features. The objective of this research was to perform the digital mapping of landforms in this environment, supported by geomorphometric, spectral, and sedimentary signatures. The study area is in the northern coastal region of Paraná and comprises entirely the city of Pontal do Paraná and partially the cities of Paranaguá and Matinhos, where extensive coastal plains and different sedimentation environments occur. Through the geomorphometric signatures two landforms associated with fluvial genesis were identified, the spectral signatures allowed the identification of two landforms with estuarine genesis, and the sedimentary characteristics resulted in three distinct landforms with marine and aeolian genesis. The integration of these signatures allowed the classification of seven landforms on the coastal plain of Paraná, at the scale 1:25,000. The result of the research is the proposition of a new methodology for the classification of landforms in coastal areas based on the three signatures (geomorphometric, spectral and sedimentary).