Abstract
In a previous paper the writer has dealt with the flow of electric current from a point-electrode at the surface flowing into a stratified medium each layer of which is of constant specific resistance. In the present paper a general method is developed for determining the distribution of surface potential when the specific resistance is a continuous function of the depth. When this problem has been solved, the surface-potential distribution for any arrangement of discrete or continuously distributed electrodes, which it may be convenient to use in geophysical prospecting by this method, may be obtained by addition or by integration if continuous line-electrodes are employed.
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