Research Article

A Fast Imaging Technique Applied to 2D Electrical Resistivity Data

Figure 10

Results of the geoelectrical survey carried out on the test site of Marsala (Italy): (a) filtered Jacobian damped LSQR imaging; (b) standard least-squares constrain inversion. The superimposed black lines represent the real shapes of the tunnels.
846024.fig.0010a
(a)
846024.fig.0010b
(b)