1983
DOI: 10.7901/2169-3358-1983-1-415
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Delineation of Subsurface Petroleum Spills Using Terrain Conductivity Measurements

Abstract: Terrain conductivity is a geophysical technique which, by inducing current into the ground, can measure the conductivity of subsurface soils and interstitial waters. Hydrocarbons are not conductive materials and, because the surrounding lithology behaves to a certain extent as a conductor, the presence of pooled hydrocarbons floating on groundwater can be determined by the use of a terrain conductivity survey. Two case histories are presented in which terrain conductivity measurements were used to determine th… Show more

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“…Layers of non-conductive oil or oily sediment should therefore be detectable if in sufficient quantity (thickness) to provide a resistive signal in comparison to soils. If the differences are sufficient, this is a proven technique for delineation of subsurface contamination plumes (including petroleum hydrocarbons) (Saunders et al, 1983(Saunders et al, , 1987, although there is not extensive experience with subsurface oil detection on sand or other beaches.…”
Section: Electromagnetic (Em) Profilingmentioning
confidence: 99%
“…Layers of non-conductive oil or oily sediment should therefore be detectable if in sufficient quantity (thickness) to provide a resistive signal in comparison to soils. If the differences are sufficient, this is a proven technique for delineation of subsurface contamination plumes (including petroleum hydrocarbons) (Saunders et al, 1983(Saunders et al, , 1987, although there is not extensive experience with subsurface oil detection on sand or other beaches.…”
Section: Electromagnetic (Em) Profilingmentioning
confidence: 99%