Self-potential curve. The minimum denotes the location of seepage in a levee


electric methods


The Self-Potential (SP) method is based on the measurement of the natural potential between two points on the syrface where a natural current exists by concentration of electrolytic solutions. For the measures of the spontaneous potentials that can be produced by electrochemical reactions, are used non-polarising porous pot electrodes, with one fixed and th other one moved along profiles to create a grid.

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