From Geophysics to Microgeophysics for Engineering and Cultural Heritage
Figure 4
(a) Frontal wall of the Fountain Room of the Arabian Zisa Palace in Palermo; (b) part of the investigated mosaic wall where the grid of 176 potential electrodes was applied (red points). The 15 nails used to inject the current were inserted in as many selected points along the small, mortar-filled spaces between the tesserae of the mosaic; (c) 3D inversion model of the acquired data observed from the back of the wall (1.5 m thick). Due to the size of the grid used (2 m × 3 m), the inversion model is limited to 0.75 m of depth. All dimensions are in meters (after [4], modified).
