THE SMOOTH SOUNDING GRAPH. A Manual for Field Work ... - BGR

Case 3 (Fig.14)
20
The electrode distance L is again the same, but the thickness h in relation
to L is now very small. Therefore the current density will be increased
again.
In the cases 1 to 3 mentioned before, the electrode configuration on the
surface persisted constant, but the thickness of the first layer was
changed.
In practice, however, one cannot change the geology, i.e. the thickness h
but there is the possiblity to change the configuration on the surface
(Fig.15).
Fig.15