Estudo hidrologico, hidrogeologico e geofisico no municipio de Itamonte-MG

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

The principal objective of this dissertation was to use hydrological, hydrogeological and geophysica1 techniques to study the behavior of springs in a hydrographic microbasin; a secondary objective was the verification of the usefulness of a geophysical technique for the location of bore wells in crysta11ine rocks in embasement areas. The area studied is located in the county of Itamonte, in the south of the state of Minas Gerais, and is part ofthe area ofpreservation ofthe Mantiqueira (APA na Mantiqueira). The study was requested by the National Department for Mineral Production (DNPM) in the investigation of mineral water. Historical series from four meterological stations in the vicinity of the area were used for the hydrological analyses, with the station of Alagoa (MG) considered the standard. The yield of springs for the period of one year was monitored at three points in the microbasin: at the headwaters, in the central Part and in the lower parto Together with rainfall values from the meterological station of Alagoa, these served as the basis for the hydrological analysis of the area. BALASC/CEPAGRI software (1995) was used to apply Thomenthwaite &Matter (1995) methodology. Monthly potential evaporation and the period ofthe year in which excess or lack of water would be expected were calculated. Geophysical surveys of electrical resistivity were also made, using the "Schlumberger gradient array", which indicates zones of low electrical resistivity associated with under1ying fracture zones. The technique proved to be of great utility for the location of bore wells in one of the zones, in which they are not located exactly where photointerpretation of the geological sturcture would suggest

ASSUNTO(S)

recursos hidricos - desenvolvimento - minas gerais bacias hidrograficas - minas gerais aguas minerais hidrogeologia geofisica

ACESSO AO ARTIGO

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