Shear wave velocity profiling by inverse analysis of array microtremors for two cities in Iran: conventional derivative-based versus genetic algorithm inversion methods

摘要

GA-based and conventional derivative-based inversion methods were employed to determine V-s profile of subsurface soil layers from array microtremors for two cities in Iran. The applied methods were verified against geotechnical and geophysical data. The results obtained by both GA-based and conventional inversions were in acceptable agreement with results of other V-s profiling techniques. However, the variability of obtained V-s data was smaller at deeper depths indicating more reliability of predictions. Comparison between seismic ground response based on V-s profiles of different methods showed that both GA-based and conventional inversion methods agree more with the seismic downhole method than the seismic refraction technique.