Fig. 2. Inverted tomograms for underwater ER surveys.

The color intervals are logarithmic, and the model resolution of each block is denoted by its transparency. Fixed water layer resistivity was assumed in the inversion, and the resulting root mean square (RMS) error and vertical exaggeration (VE) is shown for each inversion. The location of survey transects is indicated in the inset maps. Note that line A2-A2′ is located in the middle of the lagoon (see Fig. 1 for location).