SEQUENTIAL WATER BALANCE AND ITS RESPECTIVE PLUVIAL EROSION IN THE MUNICIPALITY OF AMPARO DE SÃO FRANCISCO - SE, BRAZIL

Abstract

The objective is to calculate the sequential water balance between the years 1963 - 2019 for Amparo de São Francisco - SE, in order to verify the variability of the erosive index of the studied area. The monthly and annual rainfall data were acquired from the database of the Northeast Development Superintendence and the Technical Assistance and Rural Extension Company of the state of Sergipe, for the period mentioned above. The thermal data were estimated by the Estima T software. The erosive indices flowed between 7500 MJ/mm/ha/year to 28000 MJ/mm/ha/year, it is emphasized that these indices are interconnected to rainfall fluctuations that occurred with great magnitude and in a small period of time. The results of the water balance showed that the local conditions contained by the high rainfall index can cause high erodibility and show us that this methodology should be used for future studies, involving the same theme of initiative of this study under discussion.