Spatial variation of seismic ground motions: An overview
Spatial variation of seismic ground motions: An overview
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DOI：
10.1115/1.1458013
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发表时间：
2002-05
影响因子：
14.3
通讯作者：
A. Zerva;V. Zervas
中科院分区：
文献类型：
--
作者：
A. Zerva;V. Zervas
本研究讨论了密集仪器阵列记录的地震地面运动的空间变化的主题。它集中在空间变化的随机描述，并侧重于空间一致性。提出了从记录数据中估计相干性及其解释方法。介绍了一些经验和半经验相干性模型，讨论了它们在物理原因方面的有效性和局限性。另一种方法是将地震运动的空间变化视为记录数据的振幅和相位在地震运动的相干近似附近的偏差。模拟技术的人工空间变化的地震地面运动的产生也提出和比较。强调了相干性对延伸结构地震响应的影响。本文包括133篇参考文献。@DOI：10.1115/1.1458013#
This study addresses the topic of the spatial variation of seismic ground motions as evaluated from data recorded at dense instrument arrays. It concentrates on the stochastic description of the spatial variation, and focuses on spatial coherency. The estimation of coherency from recorded data and its interpretation are presented. Some empirical and semi-empirical coherency models are described, and their validity and limitations in terms of physical causes discussed. An alternative approach that views the spatial variation of seismic motions as deviations in amplitudes and phases of the recorded data around a coherent approximation of the seismic motions is described. Simulation techniques for the generation of artificial spatially variable seismic ground motions are also presented and compared. The effect of coherency on the seismic response of extended structures is highlighted. This review article includes 133 references. @DOI: 10.1115/1.1458013#