Application Of Two Ground Electromagnetic Systems In Environmental Investigations

Ground electromagnetic (EM) methods have, in the last few years,<br>proved effective in environmental investigations, such as detecting<br>and monitoring of groundwater contaminated with chemical and/or<br>municipal wastes. Groundwater pollution can result from the<br>movement of acid mine drainage from tailing ponds, from municipal<br>or chemical waste dumps, or saline water invasion in coastal areas.<br>Contaminant l@plumesll in those cases can be mapped and monitored<br>using inductive terrain conductivity meters, VLF-EM resistivity<br>techniques, and transient and multifrequency EM systems.