Horizontal-to-Vertical Spectral Ratio (HVSR) Passive-seismic Data Collected in the Des Moines River Floodplain, Des Moines, Iowa, 2018
In summer 2018, a total of 43 passive seismic surveys were conducted in the Des Moines River floodplain. The horizontal-to-vertical spectral ratio (HVSR) method is a passive seismic technique that uses a three-component seismometer to measure the vertical and horizontal components of ambient seismic noise. A resonance …