Análise Multifractal da variabilidade espacial pluviométrica no estado de Minas Gerais

Abstract

The fractal geometry approach allows identifying patterns within the nonlinear dynamicsystems, since the fractals are structures resulting from chaotic processes. Thus, a fractal dimension appears to measure the degree of irregularity, fragmentation and roughness of the objects. Several studies showed the fractal fraction efficiency for the understanding of the rainfall dynamics and its spatial distribution. In this context, the State of Minas Gerais, Brazil,comes up with as a complex system of rain trainers, from the presence of atmospheric factors, such as air masses, to the geographic elements, sites that directly influence the regional precipitation. However, a question arises about the ways to analyze the behavior of the rainfall spatial distribution and the benefits of applying the fractal approach in this scenario, which contains rainfall irregularities in all regions of the territory of Minas Gerais. Therefore, the objective of this paper was to understand the various levels of the rainfall organization in Minas Gerais, by the mapping of its fractal indices and the analysis of its possible relations with the Climatic Zoning of Minas Gerais. Through the analysis and specialization of the precipitation behavior, it was observed a rainfall pattern in the regions, when compared to the climatic zoning, presenting higher rainfall in the south of Minas, mainly due to the influence of atmospheric systems and local factors. The method proved to be effective in the regionalization of precipitation, where a fractal dimension can be an indicator of the distribution of rainfall in a locality.