Electric Signals on and under the Ground Surface Induced by Seismic Waves
Figure 7
Various cases of locations with the electrode pair buried and with saturated/unsaturated water zone levels. (a) Both electrodes are mutually parallel in the unsaturated water zone. (b) One electrode is buried in the unsaturated water zone; another is buried in the saturated water zone. (c) Both electrodes are buried in the saturated water zone. (d) One electrode is deeply buried in the unsaturated water zone; another is buried deeply in the saturated water zone. (e) Both electrodes are buried in the unsaturated water zone far from the deep saturated water zone. (f) One electrode is buried in the unsaturated water zone; another is buried near but above the saturated water zone.
