Conference proceeding
On the correlation of amplitude and phase variation of spatially variable seismic ground motions around a common, coherent component
Structural Dynamics. EURODYN '96. Vol. 1; Florence; Italy; 5-8 June 1996, pp.83-89
05 Jun 1996
Abstract
From the analysis of recorded data at the SMART-1 dense instrument array in Lotung, Taiwan, it is shown that the amplitude and phase variability of the seismic motions over extended areas around a common, coherent component are correlated; i.e., increase in the variability of the amplitudes of the motions recorded at each individual station around a common amplitude identified from the consideration of data recorded at a number of array stations imply increase in the variability of the phases at the individual stations around the common phase, and vice versa. The variabilities of amplitudes and phases around the common component appear also to be correlated with the earthquake and site characteristics. These observations have an important consequence for the simulation of realistic spatially variable seismic ground motions to be used in the seismic resistant analysis and design of long structures, such as bridges and pipelines: in most simulation approaches, it is considered that only the phase of the motions varies (spatial coherence), and its description is independent of the earthquake and site characteristics.
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Details
- Title
- On the correlation of amplitude and phase variation of spatially variable seismic ground motions around a common, coherent component
- Creators
- A ZervaO Zhang
- Publication Details
- Structural Dynamics. EURODYN '96. Vol. 1; Florence; Italy; 5-8 June 1996, pp.83-89
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019170153204721