摘要
1991年 7月建成投测的二滩水库地震遥测台网 ,经过 7年的连续运行 ,为我们提供了宝贵的第一手资料。笔者根据这些地震记录资料 ,用多种地震学方法进行分析研究后发现 ,该区域内 1～ 2级地震是库区主要的地震活动 ;小震活动基本上符合 G- R震级频度关系式 ,正常背景下的平均 b值为 0 .58;1 .5级以上地震的平均月频度为 9次 ;其能量累计蠕变也具有较好的稳定增长关系 ;地震活动的时空分布与库区几条主要断裂有一定关系。
In July 1991,the seismic telemetered network of Ertan reservoir was set up.By running for seven years,it has recorded a lot of valuable data.The data had been analysed and researched using many seismological methods.In the area,earthquakes with magnitude 1～2 are mainly seismic activity,tallying with G R relation,its b value was 0 58.The average value is 9 times.The per month accumulative energy creep release curve is nearly linear.The seismic activity space time distributions are related to a few faults in the reservoir.We can refer to the seismic activity after retainng water.
出处
《地震地磁观测与研究》
2000年第2期25-28,共4页
Seismological and Geomagnetic Observation and Research
关键词
二滩水库
地震活动
本底研究
蓄水
Ertan reservoir,seismic activity,background research
