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首页> 外文期刊>Bulletin of earthquake engineering >Interpretations of ground motion records from the 2017 M-w 7.3 Ezgeleh earthquake in Iran
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Interpretations of ground motion records from the 2017 M-w 7.3 Ezgeleh earthquake in Iran

机译：2017 M-W 7.3 Ezgeleh地震的地面运动记录解释伊朗的地震

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摘要

This study examines the time and frequency features of strong motion records obtained during the 12th November 2017 M-w 7.3 Ezgeleh (Iran) Earthquake. Different parameters including peak ground acceleration (PGA), peak ground velocity (PGV), spectral acceleration, significant duration, Arias intensity and Fourier amplitude are illustrated to provide a clear view on main characteristics of this event. As an important finding, a broad-band frequency content characteristic is obvious from the analysis of Fourier amplitude spectra obtained at four closest stations records. According to the results, the record obtained at Sarpol-e Zahab station could be considered as near-fault pulse-like motion. The amount of input energy and its corresponding level of frequency are discussed based on wavelet analysis. Results showed that more than 50% of earthquake energy at Sarpol-e Zahab city has been concentrated around 0.45s which is close to the natural vibration period of low-to mid rise structures in the region. Finally, seismic intensity in terms of modifiedMercalli intensity was extracted based on the Fourier spectrum amplitude and the peak ground motion parameters (PGA, PGV) in Sarpol-e Zahab city which was the worst affected area.
机译：本研究探讨了2017年11月12日在2017年11月12日获得的强运动记录的时间和频率特征。示出了包括峰接地加速度（PGA），峰接口（PGV），光谱加速度，显着持续时间，傅里叶幅度和傅里叶幅度的不同参数，以提供清楚的关于该事件的主要特征。作为一个重要的发现，从在四个最近的站记录中获得的傅里叶幅度谱的分析，宽带频率内容特性是显而易见的。根据结果​​，在Sarpol-E Zahab站获得的记录可以被认为是近故障脉冲样运动。基于小波分析，讨论了输入能量及其相应的频率水平。结果表明，Sarpol-E Zahab城市的50％以上的地震能量集中在大约0.45°，接近该地区低至中层结构的自然振动周期。最后，基于Sarpol-E Zahab城市中的傅里叶频谱幅度和峰接地运动参数（PGA，PGV），提取了修饰的频体强度方面的地震强度。

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