drilling profile in comparision with depth sounding and ERT
ERT: The result of the Analysis and subsequent interpretation can be adjusted by an additional well log on subtleties.
Without further knowledge it can be interpreted by means of high-quality-analysis clearly thicknesses and depths of clay/silt, sand (with aquifers), topsoil and galleries:
With subsequent drilling (drilling profile) resistors of aquifers and other objects can be verified:
