Ground conditions assessment

HVSR

Horizontial to Vertical Spectral Ratio (Nakamura's Technique) analysis utilises concentrations of seismic wave energy that reveal resonant features to derive site period information

SPAC

SPatial AutoCorrelation is an array technique that uses the dispersion of Rayleigh waves to model the site shear wave velocity behaviour at depth

Seismometer_SPAC

Seismometer used for HVSR and SPAC techniques

Seismometer_SPAC

Seismometer used for HVSR and SPAC techniques