Integrated VES and ERT Geophysical Dataset for Subsurface Heterogeneity and Groundwater-Bearing Units in the Girana Valley, Northern Ethiopia
Description
VES dataset
Files
Steps to reproduce
Conduct vertical electrical sounding (VES) measurements at the designated VES stations in the Girana Valley, Northern Ethiopia, using the Schlumberger electrode configuration. Expand the current-electrode spacing (AB/2) progressively while maintaining the corresponding potential-electrode spacing (MN/2) according to the field acquisition scheme. Record the apparent resistivity measurements (ρ, Ω·m) for each combination of AB/2 and MN/2 at each VES station (VESGR1–VESGR15). Compile the field measurements into a structured dataset containing VES station ID, AB/2, MN/2, and apparent resistivity. Apply appropriate quality control to the field measurements and inspect the apparent-resistivity curves for anomalous or inconsistent readings. Use the measured apparent-resistivity data as input for one-dimensional VES inversion to estimate subsurface layer resistivities and thicknesses. Integrate the VES results with the ERT measurements and geological/structural information to interpret subsurface heterogeneity and groundwater-bearing units. The supplied dataset contains the original VES field measurements used in the study and can be independently reprocessed using standard electrical-resistivity processing and inversion software.