摘要
分析了 1 980年 1月 1日至 1 999年 1 2月 3 1日华北地区缺震曲线、4级地震频度、4级地震连续平静天数异常对华北地区中强、强震的预报效能 ,发现这三个参数的报对率在 5 8%～ 6 1 %之间 ,虚报率在 2 8%～ 3 3 %之间 ,R>R0 ,这三个参数有较好的预报效果。
The earthquake-lack curve from Jan.1,1980 to Dec.31,1999,frequency and continuous calm time of M 4 earthquake are analyzed,and its prediction ability for medium and strong earthquakes is studied.The results show that the successful rate of prediction to the three parameters is between 58% to 61%,false rate is in 28% to 33%,and R>R 0.Thus the three parameters have good prediction effect.
出处
《华北地震科学》
2001年第3期28-33,共6页
North China Earthquake Sciences
基金
96 -91 3-0 9"重中之重"课题资助
所属分专题 :96 -91 3-0 9-0 1 0 1 -0 3
