hazard spectrum which relate the level of ground motion to an annual frequency of exceedance or return period. This information can be used to complement the deterministic analysis by removing from consideration seismic sources that appear unreasonable because of low frequencies of occurrence, by justifying mean or mean-plus-standard deviation estimates of deterministic ground motion, or by ensuring consistency of MDE ground motions with some performance goal.
概率分析的典型结果是与地震动水平的年超越频率或重现期相关的风险曲线和等风险谱。这些信息可作为确定性分析的补充，通过剔除已考虑的震源发震概率很低的不合理震源，或者通过判断确定地震动参数的平均偏差或分位值偏差（mean-plus-standard deviation），或者通过确保一些性能目标和MDE地震动参数的一致性。