resistivity profiles corresponding to a subsurface resistivity structure probed
via an assortment of arrays have been calculated using the finite difference
method. Some of the assumptions implicit within the calculation are illustrated
by examining the effects of the precise relative positions of an electrode
array and a buried feature. The responses for the Wenner, pole–pole and
dipole–dipole arrays were carried out by using the horizontal profiling
technique. Four different possible relative array–feature positions were
modelled with the finite difference method.