Assessment of Site Effects in Alpine Regions through Systematic Site Characterization of Seismic Stations

Michel, Clotaire; Edwards, Benjamin; Poggi, Valerio; Burjánek, Jan; Roten, Daniel; Cauzzi, Carlo; Fäh, Donat

doi:10.1785/0120140097

Cited by 79 publications

(56 citation statements)

References 68 publications

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“…As mentioned by Michel et al (2014), future comparisons of predicted 1D seismic responses with those obtained on earthquake recordings, as well as inclusion of other dispersion features (e.g., polarization, ellipticity, use of Love-wave dispersion curves from passive recordings, use of various ground model parameterization) will definitely help in the constraining of V S profiles and the related uncertainties, to reach robust and very reliable site characterization, and hereafter, better estimates of local site effects.…”

Section: Discussionmentioning

confidence: 98%

“…Obviously, these 'uncertainty estimates' were not comparable to one another. However, due to a lack of scientific consensus and any well-established method to quantify the uncertainty of inverted V S profiles Di Giulio et al 2012;Michel et al 2014;Cox and Teague 2016), we finally chose the 'worst' uncertainty estimation. In Table 3, the 'r source' column gives the chosen uncertainty estimates:…”

Section: Inversion and Derivation Of Velocity Profilesmentioning

confidence: 99%

“…Nevertheless, indirect approaches can also often lead to V S30 estimates of high uncertainty. To tackle these issues, important efforts have been made in recent years to perform in situ site characterization of accelerometric stations: e.g., in Italy (Foti et al 2011;Pileggi et al 2011), Switzerland (Michel et al 2014), and the USA (Yong et al 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of site conditions (soil class, VS30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods

Hollender

Cornou

Dechamp

et al. 2017

Bull Earthquake Eng

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Data provided by accelerometric networks are important for seismic hazard assessment. The correct use of accelerometric signals is conditioned by the station site metadata quality (i.e., soil class, V S30 , velocity profiles, and other relevant information that can help to quantify site effects). In France, the permanent accelerometric network consists of about 150 stations. Thirty-three of these stations in the southern half of France have been characterized, using surface-wave-based methods that allow derivation of velocity profiles from dispersion curves of surface waves. The computation of dispersion curves and their subsequent inversion in terms of shear-wave velocity profiles has allowed estimation of V S30 values and designation of soil classes, which include the corresponding uncertainties. From a methodological point of view, this survey leads to the following recommendations: (1)

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Section: Discussionmentioning

confidence: 98%

Section: Inversion and Derivation Of Velocity Profilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of site conditions (soil class, VS30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods

Hollender

Cornou

Dechamp

et al. 2017

Bull Earthquake Eng

View full text Add to dashboard Cite

show abstract

“…A significant development during PRP and the first phase of the SSMNet upgrade project is the assessment of site-specific broad-band amplification functions with respect to EF13 and the consequent ability to estimation of V S,30 for the majority of the Swiss real-time seismic stations Michel et al 2014). However, at national or regional level, that is for all those sites where a seismic monitoring station is not available, the most reliable and physically sound proxy for amplification phenomena is presently given by mapping changes in the average macroseismic intensity I (Kästli & Fäh 2006; appendix D-1 of Fäh et al 2011) with respect to the mean values of the Swiss intensity prediction equation (IPE) of Fäh et al (2011).…”

Section: S I T E E F F E C T Smentioning

confidence: 99%

“…Fäh et al 2011;Poggi et al 2011;. In-parallel to PRP, the first phase of the upgrade project of the Swiss strong-motion network (SSMNet; Clinton et al 2011;) improved the quality and quantity of the strong motion data being recorded across the nation and also included detailed geophysical characterization at a majority of new and existing Swiss strong-motion stations Michel et al 2014).…”

Section: Introduction a N D M O T I Vat I O Nmentioning

confidence: 99%

New predictive equations and site amplification estimates for the next-generation Swiss ShakeMaps

Cauzzi¹,

Edwards²,

Fäh³

et al. 2014

Geophysical Journal International

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Geometry and evolution of a fault‐controlled Quaternary basin by means of TDEM and single‐station ambient vibration surveys: The example of the 2009 L'Aquila earthquake area, central Italy

et al. 2017

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We applied a joint survey approach integrating time domain electromagnetic soundings and single‐station ambient vibration surveys in the Middle Aterno Valley (MAV), an intermontane basin in central Italy and the locus of the 2009 L'Aquila earthquake. By imaging the buried interface between the infilling deposits and the top of the pre‐Quaternary bedrock, we reveal the 3‐D basin geometry and gain insights into the long‐term basin evolution. We reconstruct a complex subsurface architecture, characterized by three main depocenters separated by thresholds. Basin infill thickness varies from ~200–300 m in the north to more than 450 m to the southeast. Our subsurface model indicates a strong structural control on the architecture of the basin and highlights that the MAV experienced considerable modifications in its configuration over time. The buried shape of the MAV suggests a recent and still ongoing predominant tectonic control by the NW‐SE trending Paganica‐San Demetrio Fault System (PSDFS), which crosscuts older ~ENE and NNE trending extensional faults. Furthermore, we postulate that the present‐day arrangement of the PSDFS is the result of the linkage of two previously isolated fault segments. We provide constraints on the location of the southeastern boundary of the PSDFS, defining an overall ~19 km long fault system characterized by a considerable seismogenetic potential and a maximum expected magnitude larger than M 6.5. This study emphasizes the benefit of combining two easily deployable geophysical methods for reconstructing the 3‐D geometry of a tectonically controlled basin. Our joint approach provided us with a consistent match between these two independent estimations of the basin substratum depth within 15%.

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Assessment of Site Effects in Alpine Regions through Systematic Site Characterization of Seismic Stations

Cited by 79 publications

References 68 publications

Characterization of site conditions (soil class, VS30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods

Characterization of site conditions (soil class, VS30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods

New predictive equations and site amplification estimates for the next-generation Swiss ShakeMaps

Geometry and evolution of a fault‐controlled Quaternary basin by means of TDEM and single‐station ambient vibration surveys: The example of the 2009 L'Aquila earthquake area, central Italy

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