Shear-wave velocity profiles and their relationship with empirical amplification functions
Abstract
From a one-dimensional shear-wave velocity profile, the quarter-wavelength approach allows computing travel-time averaged parameters such as velocity and impedance contrast. The advantage of such a procedure is the possibility of relating the averaging depth to a specific wavelength, thus making the result frequency-dependent. In this study we converted a set of velocity profiles into its quarter-wavelength representation. Results are then correlated with empirical amplification functions. For this purpose, we use a database of empirical amplification functions and shear wave profiles of the Swiss seismic network. We demonstrate that quarter-wavelength parameters can be used as proxy for seismic site characterization of rock and soft sediment sites and to derive site-dependent amplification functions. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000594282Publication status
publishedBook title
Proceedings of the Third European Conference on Earthquake Engineering and Seismology – 3ECEESPages / Article No.
Publisher
Editura ConspressEvent
Subject
shear wave velocity; subsoil structure; site amplification; quarter-wavelengthOrganisational unit
02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)
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