摘要
采用多种方法研究了云南地区观测台网建立以来的地震活动和定点前兆观测资料，注重5级以上地震的震例分析的实用性；分析了短临阶段测值在某些台站出现的巨大变化现象，或称巨变异常；较系统建立的单项指标，给出了每个台站每种手段的地震对应率Pp=对应地震次数／异常总次数；和概括率PA=对应的地震次数／研究区发生的地震总次数。
The data of seismic activities and fixed-point precursor observation since the station networks were established in Yunnan area are studied by various methods, and the practical use of M>5 earthquake example analysis is emphasized. The giant variance anomaly of the measured value during the short-impending period appeared in some stations is analysed. The earthquake correspondence ratio Pp=(correspondent earthquake frequency) / (total anomaly frequency), and the generality ratio PA= (correspondent earthquake frequency) /(total earthquake frequency) in researching area are given.
出处
《四川地震》
1997年第1期12-23,共12页
Earthquake Research in Sichuan
基金
国家地震局八五攻关课题!85-04-02-04
关键词
地震前兆
地震活动
地震预报
earthquake precursor, seismic activity, single method, earthquake prediction
