The Case for Using Mean Seismic Hazard

The Case for Using Mean Seismic Hazard
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DOI:
10.1193/1.1985447
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发表时间:
2005-08
期刊:
影响因子:
5
通讯作者:
R. Mcguire;C. Cornell;G. Toro
R. Mcguire;C. Cornell;G. Toro
中科院分区:
工程技术2区
文献类型:
--
作者:
R. Mcguire;C. Cornell;G. Toro

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完整的概率地震危险性分析包含了假设、模型和参数中的认知不确定性,并得出了年度超越频率与地面运动幅度(“地震危险性”)的分布。对于决策,如果需要单一的地震危险性表示法,最好使用该分布的平均值,而不是使用其他表示法,例如特定的分数。平均值的使用与现代对概率的解释以及安全目标和成本效益分析的先例是一致的。
Complete probabilistic seismic hazard analyses incorporate epistemic uncertainties in assumptions, models, and parameters, and lead to a distribution of annual frequency of exceedance versus ground motion amplitude (the “seismic hazard”). For decision making, if a single representation of the seismic hazard is required, it is always preferable to use the mean of this distribution, rather than some other representation, such as a particular fractile. Use of the mean is consistent with modern interpretations of probability and with precedents of safety goals and cost-benefit analysis.