Computer program to calculate resistivities and layer thicknesses from Schlumberger soundings at the surface, at lake bottom and with two electrodes down in the subsurface

A computer program is presented that calculates thicknesses and resistivities of a layered earth from three different variations of Schlumberger arrangements: (1) The usual Schlumberger method with 4 electrodes at the surface. (2) Lake bottom arrangement: 4 electrodes at the bottom of waters like lakes, rivers or the sea. (3) Two potential electrodes at the same depth in the ground and two electrodes at the surface. ll ri org/C x: +4 ohlb & 2009 Elsevier Ltd. All rights reserved.