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FUNDAMENTAL NOISE AFFECTING SIGNAL‐TO‐NOISE RATIO OF RESISTIVITY SURVEYS*
- Source: Geophysical Prospecting, Volume 23, Issue 2, Apr 1975, p. 380 - 390
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- 27 Apr 2006
Abstract
Abstract
Variations of the spontaneous electrical field appear to be a fundamental noise in geoelectrical resistivity surveying, irrespective of the origin of these variations. The signal‐to‐noise ratio can decrease to such an extent that investigations to large depths are impossible in some regions. Description of the character and magnitude of the noise recorded in Spain and Holland (1973) and the correlation between simultaneous recorded data at different locations form the subject of this paper.