Dataset of EMI measurements referred to https://doi.org/10.5194/hess-25-1-2021

ECa data were collected using a CMD Mini-Explorer device (GF Instruments, Brno, Czech Republic). The characteristics of this device make it especially suitable for monitoring electrical conductivity at relatively shallow depths. The CMD Mini-Explorer was used to measure ECa in VCP (vertical coplanar, i.e. horizontal magnetic dipole configuration) mode and then HCP (horizontal coplanar, i.e. vertical magnetic dipole configurations) mode by rotating the probe 90 axially to change the orientation from VCP to HCP mode. The probe has three receiver coils with 0.32, 0.71 and 1.18 m distances from the transmitter coil and operates at 30 kHz frequency. With the largest coil spacing, the instrument has an effective depth investigation of 1.8m in the HCP mode and 0.9m in the VCP mode. Further information can be fount at https://doi.org/10.5194/hess-25-1-2021