汶川地震中强震动相对持时的空间变化特性研究

英文篇名：Study on relative duration of strong motions during the great Wenchuan earthquake
中文刊名：地震学报
英文刊名：Acta Seismologica Sinica
作者：刘浪 ; 李小军 ; 彭小波
英文作者：Liu Lang~1) ; Li Xiaojun~2) Peng Xiaobo~3) 1) Civil Engineering School ; Tongji University ; Shanghai 200092 ; China 2) Institute of Geophysics ; China Earthquake Administration ; Beijing 100081 ; China 3) Institute of Engineering Mechanics ; China Earthquake Administration ; Harbin 150080 ; China
中文关键词：汶川地震 ; 强震动记录 ; 相对持时 ; 衰减关系 ; 上、下盘
英文关键词：Wenchuan earthquake ; strong ground motion record ; relative duration ; attenuation relationship ; hanging wall/foot wall
出版日期：2011-11-15
机构：同济大学土木工程学院;中国地震局地球物理研究所;中国地震局工程力学研究所;
年：2011
期：06
出版单位：地震学报

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值,揭示出汶川地震地震动持时的空间变化特性.
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.

引文

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