The aim of this study is to select an appropriated array type to figure localized horizontal movements of fluid in the subsurface for 3D resistivity monitoring using a permanent electrode device. Due to technical limitations, the number of current and potential electrodes is limited in the field. Therefore, the choice of the appropriated array for the survey is crucial. Using numerical modelling, the most appropriated array (pole-dipole) has been selected to detect lateral variations of the electrical resistivity in the framework of a permanent surveying installation system. A good correlation between results of numerical modelling and a field data example is shown and preferential infiltration can be observed in the field. <br> <br>


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