THE HVSR TECHNIQUE FROM MICROTREMOR TO STRONG MOTION: EMPIRICAL AND STATISTICAL CONSIDERATIONS

By.  Marco MUCCIARELLI, Maria Rosaria GALLIPOLI1

The Horizontal to Vertical Spectral Ratio technique is a widespread tool for the study of ground motion amplification. It applies to a wide range of ground motion amplitude, from microtremor to strong motion. Sometimes it becomes a mandatory choice, when there is no available outcrop for the Reference Site
technique and a borehole is unfeasible. There has been a wide debate on the theoretical limitations of the methodology, especially when applied to microtremors.
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