Regional scale seismic hazard assessment including the effect of local seismo-stratigraphical conditions is a basic tool for seismic risk estimates. A novel physically based procedure is proposed for using geological maps to extensively estimate expected seismic amplification effects relative to spectral ordinates of main engineering interest (<0.8 s). Automatic GIS based analysis of geological maps, statistical data relative to the seismic/geotechnical properties of geological units and numerical modelling are combined to determine the probability distribution of expected amplification effects by accounting for uncertainty affecting the relevant parameters. To evaluate the feasibility of the proposed procedure, it has been applied to the Tuscany Region in Central Italy. Unbiasedness of outcomes has been tested by considering detailed microzonation studies available for the considered area. Results of the proposed approach could be easily implemented in extensive seismic risk analyses where detailed seismic microzonation studies are lacking.

中文翻译：

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基于地质数据绘制工程感兴趣周期范围内的一维地震放大效应


包括当地地震地层条件影响的区域尺度地震危险性评估是地震危险性评估的基本工具。提出了一种新颖的基于物理的程序，用于使用地质图来广泛估计相对于主要工程兴趣的频谱坐标（<0.8 s）的预期地震放大效应。基于地理信息系统的自动地质图分析、与地质单元地震/岩土特性相关的统计数据和数值建模相结合，通过考虑影响相关参数的不确定性来确定预期放大效应的概率分布。为了评估拟议程序的可行性，它已应用于意大利中部的托斯卡纳地区。通过考虑可用于所考虑区域的详细微区划研究，测试了结果的公正性。所提出方法的结果可以很容易地在缺乏详细地震微分区研究的广泛地震风险分析中实施。