• 责任者：Wan Yongge （Institute of Disaster Prevention Science and Technology ; Sanhe 065201 ; China） ; Sheng Shuzhong
• 刊名：Earthquake
• 出版年：2009
• 卷期：29(2)
• 关键词：地磁场 ; geomagnetic field ; 地震前兆 ; precursor ; 中国 ; China
• 页码：p.81-87
• 图表：4 illus., 6 refs.
• 分类号：0500
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

In the earthquake precursor observation network of oft-com:office:smarttags" />China, geomagnetic and geoelectric observation instruments are usually closely placed. The high frequency interference to geomagnetic observation data with a period of one hour, which is caused by the electromagnetic induction due to the electrifying operation once an hour during geoelectric observation, will make earthquake precursor and other anomalous geophysical information difficult to be distinguished from the geomagnetic data. The characteristics of this interference information were analyzed in this paper. Finally, the effectiveness of our methods was proved by applying to the observation data of Mengcheng station of Anhui province. This method is applicable to many earthquake precursor observation stations in China.oft-com:office:office" />