Results 161 to 170 of about 1,556 (206)
VS30 Estimates Using Constrained H/V Measurements
Bulletin of the Seismological Society of America, 2009 Abstract Most seismic codes adopt the average shear-wave velocity as a key parameter in the first 30 m of subsoil ( V S 30 ). Estimates of V S 30 are therefore required for both large- and small-scale seismic microzonation. We propose a technique to measure the V S 30 based on the horizontal to vertical spectral ratio (H/V) of microtremor ...
Silvia Castellaro, Francesco Mulargia
exaly +3 more sources
Bulletin of the Seismological Society of America, 2023 ABSTRACT The averaged shear-wave velocity of the top 30 m (VS30) is widely used in earthquake engineering as a proxy to represent site responses. However, the spatial availability of measured VS30 is rather limited, and, so far, a region-specific VS30 model that would aid prediction of strong ground motions is not yet developed for ...
Hakan Bora Okay, Atilla Arda Özacar
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A Texas‐specific VS30 map incorporating geology and VS30 observations
Earthquake Spectra, 2022A Texas‐specific map that uses geostatistical kriging integrated with a region‐specific geologic proxy, field measurements of , and P‐wave seismogram estimates of is developed. The region‐specific geologic proxy is used first to predict from the surface geologic conditions across the state, and then geostatistical kriging with an external drift is ...
Meibai Li, Ellen M Rathje
exaly +2 more sources
A VS30 Map for California with Geologic and Topographic Constraints
Bulletin of the Seismological Society of America, 2014Abstract For many earthquake engineering applications, site response is estimated through empirical correlations with the time‐averaged shear‐wave velocity to 30 m depth ( V S 30 ). These applications therefore depend on the availability of either site‐specific V S 30 measurements or V S 30 maps at local, regional, and global scales. Because
Eric M Thompson, David J Wald
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, 2012 Le norme tecniche sulle costruzioni di diverse nazioni prevedono una classificazione semplificata del suolo di fondazione articolata intorno al parametro Vs30 (velocità delle onde di taglio di uno strato omogeneo equivalente a 30 m), sulla base di una presunta correlazione tra questo valore e il fattore di amplificazione sismica stratigrafica ...
CASTELLARO, SILVIA
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A Probabilistic Framework to Model Distributions of VS30
Bulletin of the Seismological Society of America, 2021ABSTRACT The time-averaged shear-wave velocity in the upper 30 m depth from the ground surface, or VS30, is often used as a predictor to describe local site effects in ground-motion models. Although VS30 is typically determined from in situ measurements, it is not always feasible to obtain such measurements due to project restrictions or
Utkarsh Mital +5 more
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Vs30: Proxy for Seismic Amplification?
Seismological Research Letters, 2008The seismic codes of many countries base their site classifications on the Vs30 parameter, i.e., the average shear-wave velocity in the first 30 m of subsoil. And yet, despite the widespread use of this parameter, there is not universal agreement that this is a valid proxy for seismic amplification.
CASTELLARO, SILVIA +2 more
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