Geosounding Principles, 2: Time-varying Geoelectric Soundings, Volume 2

abscissa abscissa value apparent resistivity curve apparent resistivity function application approximate interpretation aquifer asymptotic auxiliary Bessel functions borehole computation cross current electrodes current source depth derived determined dipole configuration direct interpretation Ebert graph electrical electrode configuration equation error criterion expression field curve filter coefficients filter for converting Fourier frequency Hence image sources inhomogeneities input function integral interpretation methods kernel function Koefoed layer model layer parameters layer resistivities linear filter logarithmic scale mean square error measuring electrodes model curves obtained ohm-m output function p₁ Papp Pleistocene PRINT procedure ratio recurrence relation reflection coefficient relative error resis resistivity filters resistivity sounding measurements resistivity transform curve right-hand member root mean square sample points sample values sampling distance Schl Schlumberger apparent resistivity Schlumberger configuration Slichter kernel function solution spectrum Station steepest descent substratum subsurface thickness third layer three-layer curve tion tivity two-layer curve two-layer transform curve Zarrouk curve zero