Mapeamento Geomorfológico Regional: um exercício metodológico.

Abstract

This study proposes a methodology for the geomorphological and geomorphometric mapping of the Uberaba map area (SE-23-Y-C), located in the Triângulo Mineiro region, at a 1:250,000 scale. The research utilizes Ross’s Dissection Index (1994), adapted by Guimarães et al. (2017), applied to the Digital Elevation Model (DEM) derived from NASA’s SRTM mission. The results indicate that the Dissection Index was effective in rugged relief areas, allowing an assessment of intense erosional processes, but it showed significant limitations in flat regions, where dissection was overestimated. To better represent the regional relief, this study integrated geomorphological subdivisions by Rodrigues et al. (2023) to correct these inconsistencies. The analysis revealed coincidences between high-dissection regions and previously mapped plateau boundaries, suggesting the relevance of a combined use of geomorphometric and geomorphological data. This work highlights the need for improved methodologies for regional scales, enabling the creation of guidelines that accurately reflect the relief and its dynamics.