GEOMORFOMETRIC TECHNIQUES TO IDENTIFICATION OF RELIEF PATTERNS/EMPREGO DE TECNICAS GEOMORFOMETRICAS NA IDENTIFICACAO DE PADROES DE RELEVO

• Published in: Ra'e ga no. 41; p. 131
• Main Authors: Bortolini, William, Taborda da Silveira, Claudinei, Pinheiro Silveira, Ricardo Michael
• Format: Journal Article
• Language: Spanish
• Published: Editora da UFPR 15.08.2017
• Subjects: Estados Unidos
• ISSN: 1516-4136
• DOI: 10.5380/raega

The geomorphometric techniques are increasingly applied to geomorphological cartography, due to the ease of measurements and extractions of topographic attributes calculated from Digital Elevation Model (MDE) that favor morphological recognition. In this context, the objective of the work was to apply geomorphometric techniques in the construction of a method for the mapping of relief patterns in the scale 1: 100,000, according to the fourth hierarchical level of the taxonomic proposal of Ross (1992). For this, the MDE was elaborated and the topographic attributes were calculated for the elevation and mean slope amplitude, using a circular radius of 750m, and later discretized in classes and combined by means of map algebra for the identification of relief patterns. The studied section covers the area of the topographic map Pato Branco (MI2682) and Clevelandia (MI2683), in southwest of Parana. The preliminarily mapped landform were submitted to the field campaign verification, which offered support to identify the relief and redefinition of the discretization intervals of the topographic attributes. Then, the smallest mappable unit with a dimension of 1767.15[km.sup.2] was established, so areas smaller than this value were grouped to neighboring units. As a result, six relief patterns: hills, morrotes, hills, sloping hills, and hills; Submitted to control by homogeneous dissection or structural dissection. The proposition offered a method to identify the relief patterns in the fourth taxon, whose application was satisfactory, demonstrating reliability with the geomorphological configuration of the study area.