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Full-Text Articles in Geophysics and Seismology
The First Earthquake Site Assessments In Alberta, Canada, Joseph J. Farrugia
The First Earthquake Site Assessments In Alberta, Canada, Joseph J. Farrugia
Electronic Thesis and Dissertation Repository
A thorough characterization of the site conditions at Alberta seismic stations is a vital component in assessing seismic hazard in the province. This thesis provides the first earthquake site characterizations in Alberta, including shear-wave velocity (VS) depth profiles, estimates of the average shear-wave velocity in the upper 30 m (VS30) and peak frequency (fpeak), and their validation for prediction of earthquake site amplification. National Building Code of Canada site classes are limited to C and D based on VS30 estimates, with D being the predominant site class. Three …
Developing And Testing A Model Of Site Amplification For Southern Ontario, Sebastian Braganza
Developing And Testing A Model Of Site Amplification For Southern Ontario, Sebastian Braganza
Electronic Thesis and Dissertation Repository
Commonly-applied methods to estimate ground-motion amplification for earthquake hazard applications in southern Ontario are highly generalized. Site amplification effects have typically been estimated by a parameter that is not well-known in the region, the time-averaged shear-wave velocity in the top 30 metres of soil; VS30. Moreover, VS30 is not well correlated with site amplification in this region. This study develops a model that can better estimate ground motions and shaking intensities in southern Ontario based on readily-available information. The model is based on a site’s peak response frequency (fpeak), which can be estimated from depth-to-bedrock. …