In-situ measurements of shear-wave velocity in sediments with higher-mode Rayleigh waves. Geophysical Prospecting 35(2

A seismic survey was carried out on a tidal flat in the SW-Netherlands in order to determine shear-wave velocities in sediments by means of higher-mode Rayleigh waves. The dispersion properties of these Rayleigh waves were measured in the 2-D amplitude spectrum-or f,k-spectrum-and resulted in phase velocities for six different modes as a func-tion of frequency (5-30 Hz). These observed phase velocities were inverted for a nine-layer model for the shear-wave velocity to a depth of 50 m