Análise da modelagem espacial do fator de conversão de altitude geométrica em altitude normal para região metropolitana de Goiânia utilizando geoestatística.

Abstract

This Bachelor's Thesis focuses on the spatial modeling of the conversion factor from geometric height to normal height in the metropolitan region of Goiânia using various geostatistical programs and tools. The overall objective of this study is to compare relevant programs in the market, analyze the results produced by paid and free programs in comparison with geostatistical literature, and evaluate the models created by Kriging in comparison with the interpolators used in the official models of the Brazilian Institute of Geography and Statistics (IBGE), where the Natural Neighbors interpolator was used for MAPGEO2015, and Cubic Spline for hgeoHNOR2020. Additionally, it aims to address important questions, such as whether geostatistical programs offer the same ease of use as Kriging, whether they provide the same control over interpolation variables, and their cost-effectiveness. The research uses data from the official IBGE point network, processed and analyzed in programs such as SURFER (paid), QGIS with the Smart-Map plugin, GeoDA, and S-GeMS (free). The results of this study will provide geospatial information for the metropolitan region of Goiânia through Kriging interpolation and assist in selecting the most suitable tools. Furthermore, it emphasizes the importance of geostatistics and new technologies in the field of geosciences and projects related to terrestrial gravity, such as irrigation and hydroelectric power generation.