In the geotechnical and seismic practice, S-wave velocity profiles are frequently derived from the inversion of dispersion curves of surface waves and single-station passive H/V curves, mostly using a blind joint fit of the two. Here we emphasize the benefits of carrying out H/V reconnaissance surveys prior to any array acquisition and data analysis. The premise is that H/V data manifest diagnostic characteristics indicative of key features of the subsurface structure, e.g., the presence of lateral heterogeneities, large impedance contrasts at shallow depths and velocity reversals. Equipped with such a prior knowledge, practitioners could make better-informed decisions about array acquisition geometries, source/surface wave types and inversion strategies, which are strongly conditioned from the subsurface structure. In the end, we present the key points into a best-practice workflow for combining H/V techniques and dispersion curve analyses.

Castellaro, S. (2016). The complementarity of H/V and dispersion curves.

The complementarity of H/V and dispersion curves

CASTELLARO, SILVIA
2016

Abstract

In the geotechnical and seismic practice, S-wave velocity profiles are frequently derived from the inversion of dispersion curves of surface waves and single-station passive H/V curves, mostly using a blind joint fit of the two. Here we emphasize the benefits of carrying out H/V reconnaissance surveys prior to any array acquisition and data analysis. The premise is that H/V data manifest diagnostic characteristics indicative of key features of the subsurface structure, e.g., the presence of lateral heterogeneities, large impedance contrasts at shallow depths and velocity reversals. Equipped with such a prior knowledge, practitioners could make better-informed decisions about array acquisition geometries, source/surface wave types and inversion strategies, which are strongly conditioned from the subsurface structure. In the end, we present the key points into a best-practice workflow for combining H/V techniques and dispersion curve analyses.
2016
Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation
967
972
Castellaro, S. (2016). The complementarity of H/V and dispersion curves.
Castellaro, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/598877
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