| 2017年6月3日内蒙古阿拉善左旗5.0级地震强震记录及特征分析 |
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| 引用本文： | 王文才,李佐唐,石文兵.2017年6月3日内蒙古阿拉善左旗5.0级地震强震记录及特征分析[J].西北地震学报,2018,40(1):139-145. |
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| 作者姓名： | 王文才 李佐唐 石文兵 |
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| 作者单位： | 中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000,中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000,中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000 |
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| 基金项目： | 中国地震局兰州地震研究所2016年度局（所）科技发展基金（010-10） |
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| 摘 要： | 2017年6月3日内蒙古阿拉善左旗发生5.0级地震,位于甘肃天祝-古浪一带的"西部烈度衰减台阵"得到充分触发,甘肃强震动台网的50台强震仪获得了主震加速度记录。本文首先对150条强震动记录进行常规处理,计算出近场强震动记录的加速度峰值随震中距的分布情况;根据4个典型台站的加速度时程记录及其加速度反应谱,分析本次地震的基本特征;然后将实际观测数据与意大利新一代地震动衰减公式对比,分析峰值加速度（PGA）及谱加速度衰减关系;最后结合已有的工程场地地质资料,采用H/V谱比法对4个不同类别的典型台站进行分析,发现该方法能很好地反映实际台站场地的反应特征。
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| 关 键 词： | 阿左旗5.0级地震 加速度记录 衰减关系 谱比法 |
| 收稿时间： | 2017/6/23 0:00:00 |
Strong Motion Records and Its Characteristics in Alashanzuoqi MS5.0 Earthquake on June 3, 2017, Inner Mongolia |
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| WANG Wencai,LI Zuotang and SHI Wenbing.Strong Motion Records and Its Characteristics in Alashanzuoqi MS5.0 Earthquake on June 3, 2017, Inner Mongolia[J].Northwestern Seismological Journal,2018,40(1):139-145. |
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| Authors: | WANG Wencai LI Zuotang and SHI Wenbing |
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| Institution: | Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Administration of Gansu Province, Lanzhou 730000, Gansu, China,Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Administration of Gansu Province, Lanzhou 730000, Gansu, China and Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Administration of Gansu Province, Lanzhou 730000, Gansu, China |
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| Abstract: | A MS5.0 earthquake occurred on June 03, 2017 in Alashan County, Inner Mongolia. During the earthquake, 150 three-component acceleration records of the main shock were obtained from 50 strong motion seismographs in Gansu Strong Motion Network. Based on these records, we first calculated the distribution of peak accelerations around the epicenter. The basic characteristics of this earthquake were analyzed according to the acceleration time-history curves and acceleration response spectra recorded by four typical stations. Further, the attenuation relation between PGAs and spectral accelerations with different distances were analyzed by comparing the observed data with Italy 08-ground motion prediction equations. The spectral ratio curves were calculated based on strong motion data from the four stations. It was found that by comparing the spectral ratio results with the borehole information from these four stations, the spectral ratio method could accurately reflect the actual site situation. |
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| Keywords: | Alashanzuoqi MS5 0 earthquake acceleration records attenuation relation spectral ratio method |
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