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Submitted July 31, 2019
Published 2007-09-10

Artículos

Vol. 9 No. 2 (2007): Tecnociencia

EVALUATING THE PERFORMANCE OF DIFFERENT GEOPHYSICAL METHODS FOR GROUNDWATER PROSPECTING IN ESPIRITO SANTO BASIN - SOUTHEAST BRAZIL


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Citación:
DOI: ND

Published: 2007-09-10

How to Cite

Carrasquilla, A., Gonçalves, C. A. and Ulugergerli, E. (2007) “EVALUATING THE PERFORMANCE OF DIFFERENT GEOPHYSICAL METHODS FOR GROUNDWATER PROSPECTING IN ESPIRITO SANTO BASIN - SOUTHEAST BRAZIL”, Tecnociencia, 9(2), pp. 89–106. Available at: https://revistas.up.ac.pa/index.php/tecnociencia/article/view/816 (Accessed: 22 November 2024).

Abstract

Four geophysical techniques were used in different parts of Espirito Santo Basin (Southeast Brazil), in both sedimentary (Aracruz District) and crystalline (Rio Bananal and Ibiraçu Districts) kind of terrains. The main goal of the survey was to evaluate the performance of these geophysical methods for groundwater prospecting in such kinds of geology. Fieldworks were performed through several soundings, using time domain electromagnetic (TDEM), while surface profiles were obtained using Direct Current Resistivity (DCRE) and frequency domain electromagnetic (FDEM). On the other hand, geophysical well logging method (WL) was used through temperature, natural gamma ray, spontaneous potential and normal/lateral resistivity logs. Thus, with the utilized geophysical methods we were able to separate shaly and sandy geological formations, as well as, the presence of faults or fractures in the crystalline rocks, which are important geological structures in the definition of aquifers within different igneous or sedimentary areas of this basin. The recognition of these environments permitted us to locate the best places to drill wells and to put correctly the casings, obtaining, in this form, freshwater resources for human consumption.   

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