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

作　　者：王培玲[1] 郭葆庆[1] 李国佑[1] 

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2011年第1期16-19,共4页Plateau Earthquake Research

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

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。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 

分 类 号：P315.31[天文地球—地震学]