This study shows the results of a near-surface investigation conducted to compare pole-dipole with dipole-dipole array. The survey was carried out in a single profile, 40 meters long. In the dipole-dipole array, the inter-electrode spacings used were 2 m and 1 m. In the pole-dipole array, spacing was 1 m. The data collected from the dipole-dipole array were combined into a single section and then compared with the results of the pole-dipole array. The investigation levels used in each array were selected in order to achieve, a priori , the same depth in the subsurface. The corresponding apparent resistivity pseudosection (field data) and the model (obtained by an inversion procedure) were very similar, proving that the pole-dipole array is a possible alternative to the dipole-dipole array, since it provided similar results for resolution and depth of investigation, as shown in the final models.
dipole-dipole array; pole-dipole array; 2D resistivity; geoelectrical imaging; applied shallow geophysics
