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Post by Admin on Jan 4, 2017 16:37:57 GMT -5
What factors should I consider when designing an ERT survey?
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Post by Judy Robinson on Mar 1, 2017 12:20:13 GMT -5
The depth of the target area/body since this will affect the electrode spacing. The closer the electrode spacing, the higher the resolution and lower depth of investigation. As the electrode spacing is increased, the resolution decreases with an increase in the depth of investigation.
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Post by paulinekessouri on Mar 1, 2017 15:25:35 GMT -5
Judy is right, the 1st factor is the depth of the target. The next two factors are:
- the lateral and vertical resolutions that are targeted: different electrode configurations can be used (Wenner vs Diploe-Dipole vs Schlumberger, vs Pole-Pole...)
- the difference in electrical resistivity between the target and the background. If the target is as conductive/resistive as the background, the electrical survey will not be able to differentiate them
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