Effect of Horizontal Component Definition on the Characterization of Vertical Ground Motions: Application to Eastern Canada |
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Authors: | Ilona Bartosh |
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Institution: | Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Montréal, QC, Canada |
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Abstract: | In this article, ground motions recorded on rock sites in eastern Canada are studied in order to characterize their vertical acceleration components. Emphasis is placed on the sensitivity of vertical-to-horizontal spectral ratios to: (i) inter-component intensity correlations and (ii) the use of geometric mean horizontal components at each site instead of considering them individually. Four different definitions of horizontal components are investigated. Vertical-to-horizontal spectral ratios are compared with the findings of other researchers. We illustrate how the results can be used to evaluate vertical acceleration demands on rock sites in eastern Canada. |
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Keywords: | Earthquakes Vertical Accelerations Eastern Canada Ground Motions Vertical-to-Horizontal Spectral Ratios Intraplate Earthquakes Ground Motion Correlations Principal Directions |
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