Multiple-order moments of the transient electromagnetic response of a one-dimensional earth with finite conductance – the Gaussian variation applied to a field example

Formulae for the moments of magnetic field response can be derived simple models which have conductivities that vary suddenly as a function depth (thin and thick sheets) or not at all (half space). In companion paper we expressions conductivity-depth profile varies smoothly, taking form Gaussian function. this apply model to data from Russell South, an area in Athabasca Basin Canada. The low signal-to-noise ratio means estimating overburden thickness is challenging problem, so dataset good candidate demonstrating applicability our approach. estimated thicknesses compared with drill information, also somewhat problematic reliable source information. If constrain similar thin sheet surface, get estimates are much greater than what inferred However, if allowed gradually value maximum conductivity vary, then find most conductive part realistic it generally above base determined drilling. Features geological interest apparent on original identified images.