紫坪铺水库地区尾波QC值研究

地震 ›› 2009, Vol. 29 ›› Issue (4): 44-51.

紫坪铺水库地区尾波Q_C值研究

周连庆¹, 赵翠萍¹, 陈章立²

1.中国地震局地震预测研究所, 北京 100036;
2.中国地震局, 北京 100036

收稿日期:2008-11-20 修回日期:2009-04-08 出版日期:2009-10-31 发布日期:2021-10-15
作者简介:周连庆(1982-), 男, 安徽枞阳人, 2008年获硕士学位, 主要从事数字地震学等研究。
基金资助:
国家科技支撑项目(2006BAC01B04-02-01)

Coda Wave Q_C Values in the Zipingpu Reservoir Area, Sichuan Province

ZHOU Lian-qing¹, ZHAO Cui-ping¹, CHEN Zhang-li²

1. Institute of Earthquake Science, CEA, Beijing 100036, China;
2. China Earthquake Administration, Beijing 100036, China

Received:2008-11-20 Revised:2009-04-08 Online:2009-10-31 Published:2021-10-15

摘要/Abstract

摘要： 利用Sato模型研究了汶川M_S8.0地震前位于震源区的紫坪铺水库地区尾波Q_C值特征。结果表明, 库区Q_C值与频率有很强的依赖关系, 4个台站的平均Q_C=21.6f^1.211, 尾波Q₀值较小, 平均为21.6。离震群最近的MZP台Q₀最大, 为29.0, 离震群最远的BAJ台Q₀最小, 为13.9。这种尾波Q₀值的差别可能与尾波Q值所反映的介质深度存在一定的关系, 而较小的流逝时间可能是这里η值偏高的原因之一。

关键词: 紫坪铺水库, 尾波Q_C值, 汶川地震

Abstract: Using Sato model, this article studied the characteristics of coda wave Q values varied with time near the Zipingpu reservoir located at the hypocenter region of the 2008 Wenchuan M_S8.0 earthquake. The results show that Q₀ of coda waves recorded by the 4 stations near the Zipingpu reservoir is relatively small and η is relatively big. Q₀ of the MZP station which is the nearest station to the earthquake swarm is the biggest, and has a value of 29.0. On the other hand, Q₀ of the BAJ station which is the farthest station to the earthquake swarm is the smallest, and has a value of only 13.9. The difference of Q₀ can be attributed to the medium's depth reflected by the coda wave Q values and small elapse time could be one of the reason for the relatively big η value.

Key words: Zipingpu reservoir, Coda wave Q_C, Wenchuan earthquake

中图分类号:

P315.7

周连庆, 赵翠萍, 陈章立. 紫坪铺水库地区尾波Q_C值研究[J]. 地震, 2009, 29(4): 44-51.

ZHOU Lian-qing, ZHAO Cui-ping, CHEN Zhang-li. Coda Wave Q_C Values in the Zipingpu Reservoir Area, Sichuan Province[J]. EARTHQUAKE, 2009, 29(4): 44-51.

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