Lateral resolution and lithological interpretation of surface wave profi ling

This document summarizes research on using surface wave profiling to characterize near-surface geology. It discusses issues with lateral resolution when imaging subsurface features like sinkholes. Numerical modeling of a sinkhole in buried hard rock shows that wider sinkholes are resolved better than narrow ones. Field data from Western Australia that combines surface wave and electrical resistivity data illustrates improved lithological interpretation when both methods are used. The researchers investigate ways to enhance lateral resolution, such as using non-linear geophone spacing. They also demonstrate data-driven classification of rock types based on resistivity and shear wave velocity measurements.