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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/5137

Title: Imaging industrial contaminant plumes with resistivity techniques
Other Titles: Journal of Applied Geophysics
Authors: Lima, Olivar Antônio Lima de
Sato, Hédison Kiuity
Porsani, Milton José
Issue Date: 1995
Abstract: A systematic geophysical procedure has been developed and applied to image groundwater contamination caused by industrial activities in Bahia, Brazil. The procedure combines the use of conventional Schlumberger sounding with a regular scheme of sampling the resistivity stratification in depth. This is achieved by traversing an area with multiple profiles measured at selected electrode spacing. By multiple profiles we mean closely spaced partial soundings made using only six electrode spacings. Partial and complete soundings are correlated and inverted assuming horizontally stratified models within the limits covered by each electrode array. Pseudo-resistivity sections constructed from these data are inverted and adjusted using a two-dimensional finite difference algorithm. Electrical and lithological well logs are used to constrain this interpretation. The procedure was successfully applied to investigate the groundwater conditions and to outline contaminant plumes within industrial areas of the Camaqari Petrochemical Center, Rec6ncavo basin, Bahia. The study includes cases of electrically conductive plumes generated by infiltration of inorganic aqueous effluents and a resistive plume containing hydrocarbon contaminants.
Description: p. 93-108
URI: http://www.repositorio.ufba.br/ri/handle/ri/5137
ISSN: 0926-9851
Appears in Collections:Artigos Publicados em Periódicos (IGEO)

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