Abnormal Characteristics Analysis of Geomagnetic Spatial Correlation before Medium and Strong Earthquakes in the Northeast China Region
详细信息
- 责任者：Ren Jianhui (Earthquake Administration of Harbin City ; Harbin 150021 ; China) ; Li Jiye
- 刊名：Earthquake Research in China
- 出版年：2011
- 卷期：27(4)
- 关键词：地震前兆 ; precursor ; 东北地区 ; Northeast China
- 页码：p.438-447
- 图表：6 illus., 7 tables, 10 refs.
- 分类号：0500
- issnNo：ISSN1001-4683
- isbnNo：CN11-2008/P
摘要
Using the 21 O’clock F component observation data of geomagnetic stations in Heilongjiang,Jilin,Inner Mongolia and Liaoning provinces,the paper researches the changes of spatial correlation before several medium earthquakes and finds that the spatial correlation would decline.We provide the preliminary index for abnormality judgment for the guidance of short-term earthquake forecast in the region.