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Showing 1 to 10 of 10 for “"Site amplification"”.
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Nonlinear site amplification functions for Central and Eastern North America
Site amplification functions are used to modify ground motions from a reference bedrock condition to a surface condition based on the geologic features of the site of interest. Site amplification has been extensively studied and evaluated empirically for seismic regions such as the Western United …
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Conventional and deep learning-based site amplification models for central and eastern North America
… continental region that lacks region-specific site amplification functions due to a dearth of ground motion recordings for empirical constraints. Recently developed site amplification functions using a parametric study of large-scale one-dimensional (1D) site response analyses represent …
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Enhancements in earthquake ground motion assessment through regional Vₛ₃₀ characterization and Vₛ₃₀ scaling
Local site conditions can have significant effects on the intensity of ground shaking caused by earthquakes. Vₛ₃₀, the time-averaged shear wave velocity in the upper 30m, is a prevalently utilized parameter in numerous predictive ground motion models (GMMs) and building codes to account for site …
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Site Response Characteristics of Compacted Gravel Fill in Iceland
Local site conditions can greatly increase the intensity and character of earthquake shaking and, thus, the extent and type of structural damage. The removal and replacement of in-situ soils with compacted gravel-sized volcanic rock has been prevalent in the Icelandic foundation subgrade …
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A comparison of proxies for seismic site conditions and amplification for the large urban area of Santiago de Chile
… and a study was carried out aiming to estimate site amplification derived from earthquake data and ambient noise. The analysis of earthquake data shows significant dependence on the local geological structure with regards to amplitude and duration. Moreover, the analysis of noise spectral ratios …
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Topography effects in the 1999 Athens earthquake : engineering issues in seismology
… and on flat areas. Systematic seismic motion amplification over convex topographies has been confirmed by instrumental studies and also predicted by theoretical and numerical simulations of wave diffraction. Nonetheless, for the most part, the former have been limited to weak motion data and …
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Ground Motion Prediction Equations for Non-Spectral Parameters using the KiK-net Database
… less than 45 km). The models developed consider site amplification using V<sub>S30</sub> and the depth to a layer with V<sub>S</sub>=800 m/s (h₈₀₀). We observe that the site effect for I<sub>α</sub> is magnitude dependent. For Ds<sub>5-95</sub> and Ds<sub>5-75</sub>, we also observe strong …
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Refraction Microtremor Analysis of Areas Surrounding California State University San Bernardino
… to the San Andreas Fault Zone may be subject to site amplification of ground motion caused by seismic activity via wave propagation through the subsurface. These seismic hazards are being addressed via the Alquist-Priolo Earthquake Faulting Zone Act and the National Earthquake Hazards Reduction …
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Improving seismic site response analysis for non-standard sites
… deposits. In particular, I focus on aspects of site response analysis, i.e. the modelling of the modulation of seismic waves by soil deposits. The main goal of the thesis is to improve site response analysis for "non-standard" sites, which are those for which the general assumptions of shallow …