摘要
阐述了采用一定时间域前兆观测值的样本分布与其背景分布形式显著性的2 统计检验法识别前兆异常的思路 ,利用云南地区 1 994～ 1 996年的部分台站的水氡观测资料 ,采用上述方法提取了前兆异常 ,并与地震的实际发生情况进行了对比 ,表明强震前震源区附近水氡具有明显的前兆异常。由于分布形式的显著性检验法对异常反映较一般方法敏感 ,并且可以不受具体的分布形式的限制 。
A statistical precursory identification is introduced in the paper,according to hypoth- esis that the observed data during the genetic stage of a large earthquake are different in frequency distribution during the normal or non-genetic stage of earthquakes and can be obtained by2 -testfor the distribution of the data.Examples that show the relations be- tween large earthquakes and the precursory anomalies of Radon data observed in Yunnan during1 994～ 1 996are also given in the paper.
出处
《地震》
CSCD
北大核心
1998年第3期257-264,共8页
Earthquake
基金
国家地震局"九五"科研攻关项目!( 95-0 4 -0 5-0 2 -0 4 )
