Depth of detection in resistivity surveys. A case study of a resistive buried target

There are in the literature several examples of experiences for detection of buried structures, both in physical (e.g. Apparao, et al., 1992, 1997 a and b) and computer modelling (Coggon, 1973). The objective of the present study was the evaluation of DC resistivity surveys lirnitations for detection of a buried resistive structure in a natural environment. To fulfil this objective, several profiles using Wenner Continuous Vertical Electrical Soundings (CVES) and Dipole-Dipole array were performed in a landfill for a highway in Portugal.