Detection Of Polluted Ground Water By Spontaneous Electrical Potential
Author(s)
J.A. Randall-Roberts
Abstract
Detection of polluted ground water by
spontaneous electrical potential
J. A. Randall-Roberts
University of Guanajuato, Dept. Of Agriculture
Apdo. 168, Guanajuato, Gto. CP 36000, MEXICO.
Abstract
The spontaneous potential (SP) method is a very sensitive geophysical system
that detects changes in the quality of ground water based on surface
measurements in mV (millivolts). The SP signal is evaluated from curves by
interpreting amplitude/wave length. In deep clean aquifers, amplitudes range
from 5-15 mV over wave lengths from 150-550 metres; in studies on a shallow
very polluted aquifer, the amplitude reaches 80-100 mV, with cross-overs from
negative to positive readings, and much shorter wave lengths, 30-80 metres. The
signal is caused by Redox reactions in the ground water and in its reactions with
the host material, making the method useful for water pollution studies.
1 Introduction
The use of spontaneous electrical potentials as a surface geophysical prospecting
metho
Keywords
Related Book
Other papers in this volume
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