摘要
在分析描述地震活动性的各类参数的基础上，认为Ａ（ｂ）值可以较好地定量描述一个地区的地震活动增强和平静特征。作者用１９７２～１９９６年期间华北地区地震资料进行Ａ（ｂ）值空间扫描。结果表明绝大部分中强以上地震前２～３年，在未来震中周围出现较大范围Ａ（ｂ）值中期异常区域，有很好的预报效果。
Based on the analysis of each parameter described seismicity, we think A(b ) value can better quantitatively describe the enlargement and quiet of seismici ty in this paper. The seismicity data of moderate or small earthquakes during 19 72～1996 in North China are used to space scanning of A(b ) value. The resul t shows that in mid term of 2～3 years before most strong earthquakes there are obviously anomaly zones of A(b ) value with very good prediction ability . Some problems about mid term prediction used A(b ) value are also disscus ed.
出处
《中国地震》
CSCD
北大核心
1999年第2期116-127,共12页
Earthquake Research in China
基金
国家地震局95-04项目
关键词
地震活动
定量化
地震预报
中期预报
Enlargement and quiet of seismicity\ A(b ) value\ Sei smic mid term prediction
