Surface geoelectrics for the study of groundwater pollution — Survey design

Mazac, O.; Landa, Ivan; Kelly, William E.

doi:10.1016/0022-1694(89)90258-8

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…This is feasible because electric current in rocks, although strongly controlled by the amount and salinity of the pore electrolytes, is also dependent on the tortuosity of the pore space and on the proportion of dispersed conducting solids. In fact, conventional geoelectrical techniques have been used effectively in resolving many complex problems in geohydrology and in geotechnics (Dobecki and Romig, 1985;Mazac et al, 1987Mazac et al, , 1989.…”

Section: Introductionmentioning

confidence: 99%

Imaging industrial contaminant plumes with resistivity techniques

Lima¹,

Sato²,

Porsani³

1995

Journal of Applied Geophysics

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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.

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Section: Introductionmentioning

confidence: 99%