Electrical Techniques
Electrokinetic Sounding (EKS)
Outline
EKS provides a measure of the variation in the hydraulic conductivity of saturated subsurface layers with depth by measuring the seismically induced time varying electromagnetic response from saturated aquifers. Readings are taken using two pairs of electrodes aligned symmetrically about the seismic source. This normally consists of a mechanical weight drop or simple hammer and plate. In order to relate hydraulic conductivities to depth additional information on the seismic velocity of subsurface layers and their conductivities is required.
