Taxonomic mapping of the relief of the municipality of ubajara establishing comparison with the proposition of the brazilian system of classification of the relief (SBCR)

Abstract

The relief is a guiding element of the research, supporting the taxonomic mapping of the relief that is an essential technical instrument to evaluate natural vulnerabilities, as well as analyze the transformations in the dynamics resulting from human interference. By mapping the forms, it is possible to identify the particularities of this natural element, including highlighting the dynamic potential of geomorphological processes. Thus, the present work aimed to perform a taxonomic mapping of the relief from Digital Elevation Models establishing a comparison between the classification of Ross (1992) and the Brazilian System of Classification of Relief (SBCR). The survey was conducted in the municipality of Ubajara - CE, which occupies an area of 423.848 km2. The study has as theoretical and methodological basis the Ross Relief Taxonomy (1992), represented by three levels in the area, from the largest to the smallest following the proposition of SBCR: Morphocultural Units, Morpho-structural Units and Types of Modeled. The municipality of Ubajara showed a very diverse geomorphological point of view, allowing the identification of five mofoesculturas: Ibiapaba Peripheral Depression, Escarpments, Ibiapaba Summit Plateau, Ibiapaba Fringes and Ibiapaba Monoclinal Depression.