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水口水库地区地震震源机制解特征分析
引用本文:林松建,连玉平,陈为伟.水口水库地区地震震源机制解特征分析[J].地震,2007,27(1):114-119.
作者姓名:林松建  连玉平  陈为伟
作者单位:1. 中国科学技术大学,安徽,合肥,230026;福建省地震局,福建,福州,350003
2. 福建省地震局,福建,福州,350003
基金项目:本文得到鄢家全研究员和丁学仁研究员的指导和帮助,在此表示感谢.
摘    要:求解了福建水口水库地区15个地震的震源机制解。结果表明,水库蓄水早期地震震源参数变化较大,而蓄水晚期地震震源参数基本一致。此外,还对蓄水早期和蓄水晚期构造主应力方位、作用类型以及地震断层滑动性质特征进行了分析,虽然这些地震都属于水库蓄水诱发地震,但相对而言,蓄水晚期的诱发地震具有明显的构造地震特征。这些结论将对其他水库地震分析具有一定的参考价值。

关 键 词:震源机制  水口水库  水库诱发地震  构造地震
文章编号:1000-3274(2007)01-0114-06
修稿时间:2006-07-17

Analysis on features of focal mechanism solution of earthquakes in the Shuikou reservoir area
LIN Song-jian,LIAN Yu-ping,CHEN Wei-wei.Analysis on features of focal mechanism solution of earthquakes in the Shuikou reservoir area[J].Earthquake,2007,27(1):114-119.
Authors:LIN Song-jian  LIAN Yu-ping  CHEN Wei-wei
Institution:1. University of Science and Technology of China, Hefei 230026; 2. Earthquake Administration of Fujian Province, Fuzhou 350003, China
Abstract:The focal mechanism solution of 15 earthquakes in Fujian Shuikou reservoir area is calculated.It is found that the hypocenter parameters during the early impounding are different and the hypocenter parameters during the late impounding are basically consistent.Besides,this paper analyzed the orientation and functional type of tectonic principal stresses and the seismic faults' slip features during the early and late impounding.Although both kinds of earthquakes are reservoir-induced,the earthquakes in the late impounding evidently have the tectonic feature.These results are of certain significance for analysis on other reservoir-induced earthquakes.
Keywords:Focal mechanism  Shuikou reservoir  Reservoir-induced earthquake  Tectonic earthquake
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