
%0 Journal Article
%A Lee, T.J. 
%T Depth estimation with PEM ? a cautionary note
%J Exploration Geophysics
%D 1978/12/01
%V 9
%N 4
%P 168-169
%K 
%R https://doi.org/10.1071/EG978168
%U https://www.publish.csiro.au/paper/EG978168 
%X The method advocated by Crone (1977) for determining the position of a "current axis" for a conducting ore body will give a positive result even if there is no ore body. The depth, l, to this axis in a uniform ground of conductivity s and permeability m0 is given by: [see full text for equation]. In this expression t is time and consequently the result can be used to determine the conductivity profile of a nearly uniform ground. 
