“…ERT can be applied to define the water table (Zaidi, 2012), to delineate aquifers (Dutta et al, 2006), to search for karst geological structures (Leuccim, 2005) and find karst water (Metwaly et al, 2012;Vlahović & Munda, 2011;Gan et al, 2013) and also to study the unsaturated zone (Arora, 2013;Carriere et al, 2013).…”