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InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization, Part I: Intra-comparison of surface wave methods

Garofalo, F.; Foti, S.; Hollender, F.; Bard, P.-Y.; Cornou, C.; Cox, B. R.; Ohrnberger, M.; Sicilia, D.; Asten, M.; Di Giulio, G.; Forbriger, T.; Guillier, B.; Hayashi, K.; Martin, A.; Matsushima, S.; Mercerat, D.; Poggi, V.; Yamanaka, H.

Abstract:
The main scope of the InterPACIFIC (Intercomparison of methods for site parameter and velocity profile characterization) project is to assess the reliability of in-hole and surface-wave methods, used for estimating shear wave velocity. Three test-sites with different subsurface conditions were chosen: a soft soil, a stiff soil and a rock outcrop. This paper reports the surface-wave methods results. Specifically 14 teams of expert users analysed the same experimental surface-wave datasets, consisting of both passive and active data. Each team adopted their own strategy to retrieve the dispersion curve and the shear-wave velocity profile at each site. Despite different approaches, the dispersion curves are quite in agreement with each other. Conversely, the shear-wave velocity profiles show a certain variability that increases in correspondence of major stratigraphic interfaces. This larger variability is mainly due to non-uniqueness of the solution and lateral variability. As expected, the observed variability in VS,30 estimates is small, as solution non-uniqueness plays a limited role.


Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1016/j.soildyn.2015.12.010
ISSN: 0267-7261
KITopen ID: 1000051996
Erschienen in Soil Dynamics and Earthquake Engineering
Band 82
Seiten 222-240
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