| Autor: |
Balde Quinay, Pher Errol, Ichimura, Tsuyoshi, Hori, Muneo, Nishida, Akemi, Yoshimura, Shinobu |
| Předmět: |
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| Zdroj: |
Bulletin of the Seismological Society of America; Jun2013, Vol. 103 Issue 3, p2094-2110, 17p |
| Abstrakt: |
We studied the seismic structural response of a model of fault-structure system with fine resolution using multiscale analysis with parallel simulation of seismic-wave propagation. Our goal was to generate a numerical model with less geometric approximation for use in fault-structure system analysis that includes the crust, soil, and building structure. In the multiscale analysis, the solution of the faultstructure system was estimated using a two-step process. First, the solution of a lowresolution model (at a geologic-length scale) was computed. Then, this solution was used as an input boundary condition to the high-resolution model (at an engineeringlength scale). The final solution from this process is thought to be an acceptable estimate of a direct analysis of a fault-structure system. To reduce the computation time of the simulation from fault to ground surface (at a geologic-length scale), we implemented parallel simulation of seismic-wave propagation based on domain decomposition by a prepartitioning method. This method is based on automated multiresolution (hybrid grid) meshing of subdomains in a distributed-memory computer. We also performed verification and validation tests with application to maximum target frequency of 1.0 Hz. Finally, we computed the dynamic responses of a fault-structure system model that included a nuclear power plant as the building structure using a fineresolution model based on realistic conditions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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