安徽地区尾波Q_c值特征研究

英文篇名：Research on the Q_c Value of Anhui Area
中文刊名：华北地震科学
英文刊名：North China Earthquake Sciences
作者：郑先进 ; 刘东旺 ; 沈小七 ; 刘泽民 ; 倪红玉 ; 李玲利
英文作者：ZHENG Xian-jin(1 ; 2) ; LIU Dong-wang(1 ; 2) ; SHEN Xiao-qi1 ; LIU Ze-min1 ; NI Hong-yu(1 ; 2) ; LI Ling-li(1 ; 2)(1.Earthquake Administration of Anhui Province ; Hefei 230031 ; China ; 2.Mengcheng National Geophysical Observatory ; Mengcheng 233500 ; China)
中文关键词：尾波Qc值 ; Sato模型 ; 震群序列 ; 延续时间
英文关键词：the Qc value of code wave ; the Sato model ; earthquake swarm sequences ; duration
出版日期：2011-09-15
机构：安徽省地震局;蒙城地球物理国家野外科学观测研究站;
年：2011
期：03
出版单位：华北地震科学

摘要

基于Sato单次散射模型,利用安徽省数字化测震台网2001年以来记录到的ML≥2.3级地震的波形资料,计算得到了安徽地区不同台站周围地壳介质的尾波Qc值,发现省内不同地区尾波Qc值存在着明显的差异,霍山地区尾波Qc值相对省内其余地区较低,拟合得到了安徽地区尾波Qc值与频率之间的依赖关系,为Qc=(104.9±36.4)f(0.85±0.08)。对安徽霍山地区2009年2—12月的震群序列尾波Qc值变化特征进行了分析,发现主震前后尾波Qc值发生显著的变化。
Based on digital waveform data of ML≥2.3 earthquakes recorded by Anhui digital seismic network,the Qc value of the medium below seismic stations in Anhui area is calculated using the Sato single scattering model.The results show that the Qc value is inhomogeneous and much lower in Huoshan area.The formula for the relationship between Qc value and frequency in Anhui area is determined using curve fitting,which isQc=(104.9±36.4)f~((0.85±0.08)).Particularly,the Qc value of Huoshan earthquake swarm sequences occurred from February to December of 2009 is calculated and analyzed, which shows significant difference between before and after the main shock.

引文

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