Site effect assessment

Accurate ground-motion prediction requires detailed site effect estimation. One of the most widely used techniques to estimate seismic site response involves analyzing the Horizontal to Vertical Spectral Ratio (HVSR) of ambient seismic field recordings. Based on the diffuse field assumption (DFA), the H/V of the auto-correlated signal is linked to the ratio of the imaginary parts of the 1D Green’s function components and allows naturally for soil structure characterization.

The aim of the project is to apply the H/V me thod to numerous situations and make it more robust, effective and able to characterize finely the soil structure by using support of other methods. Currently, we are  pushing forward the method to image structure as deep as the moho discontinuity.

Main collaborator: Mathieu Perton  Scholar