Fig. 8
2D subsurface sections from CSAD. a) \({V}_{P}\) tomogram obtained from seismic refraction data. The zones in the SE and NW corners, marked by black oblique lines, indicate areas where data points have been extrapolated to the nearest neighbor and should be regarded as unreliable. (b) velocity gradient (\({dV}_{P}\)). (c) \({V}_{S}\) tomogram cropped to match \({V}_{P}\) penetration depths. (d) Computed \({V}_{P}\)/\({V}_{S}\) section from obtained tomograms in a and c, the red triangles refer to high-resolution locations in Eleslambouly, et al. 27. The blue triangle represents the water table level based on shallow borehole observations.
