“…Cross-hole seismic tomography which involves measuring travel times of seismic ray paths between two or more boreholes in order to derive an image of seismic velocities between the wells offers an approach for characterizing geological heterogeneities at a high resolution. Its application range from near surface aquifer studies, geothermal, to deep oil and gas reservoirs (Sainkov et al 2005;Tselentis et al 2011). Becht et al, (2007), evaluated the use of cross-hole seismic tomography for high resolution aquifer characterization.…”