Fig. 7

2-D \({V}_{S}\) tomograms obtained from the MASW data for (a) CSAD and (b) SJUW sites. Red triangles denote the locations of the initial 1-D \({V}_{S}\) models derived from forward shots; blue triangles mark the inferred water table. The high \({V}_{S}\) values at CSAD are attributed to lithified rock, while SJUW reveals karstic features and a sand/limestone bedrock.