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Modelling of Seismic Ground Motion in Santiago de Cuba City from Earthquakes in Oriente Fault Seismic Zone

机译:东方断层地震带地震中古巴德圣地亚哥市地震地震动的建模

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— We present the results of complete P-SV and SH waves modelling, up to a maximum frequency of 1 Hz, along two profiles in Santiago de Cuba city. The seismic sources are located in the depth range from 10 to 40 km on the Oriente fault zone at distances of several tens of kilometres from the city. The calculation has been made by a hybrid method: Modal summation in the regional anelastic model (one-dimensional) where the source is buried, and finite differences in the local sedimentary anelastic models (two-dimensional). The analysis of the influence of the depth and of the distance of the source on the site effects shows that standard traditional methods, based on the deconvolution analysis of the rock outcrop motion, can lead to erroneous results.
机译:—我们在古巴圣地亚哥市的两个剖面上展示了完整的P-SV和SH波建模结果,最高频率为1 Hz。地震源位于东方断层带的10至40 km的深度范围内,距市区数十公里。计算是通过一种混合方法进行的:埋没源的区域非弹性模型(一维)中的模态求和,以及局部沉积非弹性模型(二维)中的有限差异。对震源深度和距离的影响对场地影响的分析表明,基于对岩石露头运动进行反褶积分析的标准传统方法可能会导致错误的结果。

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