As I understand, HVSR is commonly computed from ambient noise and earthquake records using velocity sensors. We now aim to compute HVSR from strong motion data, i.e., accelerograms. Is this approach reliable for inverting HVSR to estimate shear wave velocity?
Yes, you can compute HVSR from accelerograms, but it’s less common than using velocity sensors. With proper preprocessing (baseline correction, filtering, integration if needed), HVSR from strong‐motion data can still be reliable for site response and shear‐wave velocity inversion, though care must be taken with saturation, nonlinear soil response, and signal quality
Yes, HVSR can be computed from accelerograms, and it may still provide the site’s fundamental resonance frequency. However, using it to invert for shear-wave velocity profiles is not very reliable, because strong motion HVSR is influenced by nonlinear effects and source-path contributions. It is best used in conjunction with noise HVSR, weak-motion data, or independent Vs constraints.
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