Quantitative Integration of Seismic and CPT for Soil Property Estimation - Sensitivity Analyses on Field and Lab Data

We have shown that if seismic Vs and CPT qc in sand are estimated sufficiently accurately at a given location, then different depth zones within the sand body representing different porosity and effective horizontal stress manifest correlating patterns between Vs and qc. If the depth-specific correlation in sand can be well captured between the two independent measurements, then this correlation can be used, together with their underlying physics and a knowledge of the intrinsic parameters, to estimate in-situ porosity, horizontal stress and their lateral variations. In-situ estimation of these two properties is quite difficult, although these are crucial parameters to the engineers. The proposed approach offers a solution to this problem.