Value of laboratory measurements on samples for electrical resistivity and induced polarization field data analysis

The quantitative interpretation of electrical geophysics imaging remains a challenge in hydrogeology, geotechnical engineering, and environmental studies. This work introduces a methodology that integrates laboratory-based petrophysical measurements with geoelectrical field imaging (electrical resistivity ERT and induced polarization IP) for improved calibration and analysis of these data. By characterizing representative samples under controlled conditions, we establish quantitative relationships between electrical properties and key parameters such as temperature, water content, clay fraction, and permeability. The relationships obtained are then used to convert ERT/IP imageries into quantifiable petrophysical properties. Applications demonstrate a high degree of consistency between the inverse models and surface observations or in-situ measurements of physical parameters, thereby reducing interpretation ambiguities. This approach enhances the quantitative value of geoelectric imaging by providing a reproducible framework for linking electrical properties and petrophysical parameters and paves the way for future developments.