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大柴旦地震序列尾波衰减Q值变化特征研究
CHARACTERISTICS OF CODA ATTENUATION AND Q-VALUES IN DACHAIDAN EARTHQUAKE SEQUENCE
【摘要】 利用大柴旦数字地震台记录的2008年6.3级和2009年6.4级的数字地震资料,系统地分析了大柴旦地震序列尾波Q值随时间的变化,着重分析了尾波Q值在强震前的短期变化特征。结果表明,Q值在大震前后有较明显的变化,基本趋势是震前Q值增高,震后降低。
【Abstract】 By using the digital data of earthquakes with Ms6.3 in 2008 and Ms6.4 in 2009 recorded by Dachaidan seismic station,the coda Q-values variation with time in Dachaidan earthquake sequence is analyzed,especially the coda Q-values variation in short period before strong events,and the results show that Q-values change obviously before and after strong earthquakes,its general tendency appears that Q-values are high before the events and low after the events.
【关键词】 地震波衰减;
地震序列;
尾波;
Q值;
大柴旦地震序列;
【Key words】 Seismic wave attenuation; Coda; Q-values; Dachaidan earthquake sequence;
【Key words】 Seismic wave attenuation; Coda; Q-values; Dachaidan earthquake sequence;
【基金】 2010年度震情跟踪合同制定向工作任务(2010020201);青海省地震局地震科学基金(2009A01)联合资助
- 【文献出处】 高原地震 ,Plateau Earthquake Research , 编辑部邮箱 ,2011年01期
- 【分类号】P315.31
- 【被引频次】1
- 【下载频次】36