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Resistivity In Cave Exploration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 12th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, Mar 1999, cp-202-00034
Abstract
Simple d.c. resistivity and profiling have been used in the past for cave mapping. One can<br>also attempt to obtain an inversion tomogram using a pseudo-section type gatherer. In<br>this presentation we will demonstrate that the pseudo-section method can be inadequate<br>and leads to very poor imaging accuracy, unless the desired target is in the center region<br>of the survey.<br>A new, more comprehensive method of obtaining the data will be presented. The method<br>is tested using examples from Harrison’s Caves, Barbados, West Indies and Indian Echo<br>Caverns, Pennsylvania. The technique can also be applied to accurate imaging of tunnels<br>and underground structures.