| 汶川地震中强震动相对持时的空间变化特性研究 |
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| 引用本文： | 刘浪,李小军,彭小波. 汶川地震中强震动相对持时的空间变化特性研究[J]. 地震学报, 2011, 33(6): 809-816. DOI: 10.3969/j.issn.0253-3782.2011.06.011 |
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| 作者姓名： | 刘浪 李小军 彭小波 |
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| 作者单位： | 1) 中国上海200092同济大学土木工程学院2) 中国北京100081中国地震局地球物理研究所3) 中国哈尔滨150080中国地震局工程力学研究所 |
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| 基金项目： | 国家自然科学基金重大研究计划项目(90715038); 国家科技支撑计划项目(2009BAK55B05)资助 |
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| 摘 要： | 使用70％和90％能量持时定义,计算了汶川Ms8.0大地震中获取的来自109个台站强震动加速度记录的相对持时,并以此在竖向及两个水平向上分别进行了回归统计分析,得到了地震动持时的空间变化关系,给出了适合汶川地震地震动的持时定义.对比分析了上盘和下盘2个区域持时空间变化特征,进一步计算了地震动竖向持时与两个水平向持时的比...
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| 关 键 词： | 汶川地震 强震动记录 相对持时 衰减关系 上、下盘 |
Study on relative duration of strong motions during the great Wenchuan earthquake |
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| Liu Lang,Li Xiaojun,Peng Xiaobo. Study on relative duration of strong motions during the great Wenchuan earthquake[J]. Acta Seismologica Sinica, 2011, 33(6): 809-816. DOI: 10.3969/j.issn.0253-3782.2011.06.011 |
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| Authors: | Liu Lang Li Xiaojun Peng Xiaobo |
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| Affiliation: | 1) Civil Engineering School, Tongji University, Shanghai 200092, China2) Institute of Geophysics, China Earthquake Administration, Beijing 100081, China3) Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China |
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| Abstract: | Relative durations of strong ground motions from 109 station records of MS8.0 Wenchuan earthquake are calculated based on 70% and 90% energy duration definition.Attenuation relationships of the durations under different definitions are statistically analyzed for three component records and 90% duration definition is recommended.The relationships in the hanging wall and footwall of earthquake faults are compared and the ratios of vertical duration to horizontal duration are discussed for different areas. |
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| Keywords: | Wenchuan earthquake strong ground motion record relative duration attenuation relationship hanging wall/foot wall |
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