Research on Anomalous Activities before Qianguo Earthquake by Using Factor Analysis Method
详细信息
- 责任者：Li Yongzhen (Earthquake Administration of Liaoning Province ; Shenyang 110034 ; China) ; Yu Xiaofei
- 刊名：Seismological Research of Northeast China
- 出版年：2009
- 卷期：25(2)
- 关键词：强震 ; strong earthquakes ; 地震前兆 ; precursor ; 吉林 ; Jilin Province
- 页码：p.23-28
- 图表：3 illus., 3 tables, 3 refs.
- 分类号：0500
- issnNo：ISSN1004-2865
- isbnNo：CN21-1108/P
摘要
The factor analysis were made by the data near the seismic epicenter of Qianguo MS5.0 earthquake and selecting the parameter N(ML≥3.0), b,η, A(b),Mf, AC, C and D value which had relation to the earthquake time, space and strength. There were some relativity among 8 parameters and each one was different in distinct stages, but the earthquake time, apace and strength synthetic index Wfa can be gained by the factor analysis. Wfa value showed obvious anomalies before Qianguo earthquake. It showed that the synthetic index Wfa can reflect the anomalous characteristics of the seismicity.