Relationship between Zero-Value-Line of Abnormal Geomagnetic Field in Lithosphere and Strong-Moderate Earthquake Epicenters in North China Seismic Region

详细信息   

• 责任者：Gu Chunlei(College of Earth and Space Science ; University of Science and Technology of China ; Hefei 230026 ; China) ; Zhang Yi
• 刊名：Northwestern Seismological Journal
• 出版年：2012
• 卷期：34(2)
• 关键词：大震 ; great earthquakes ; 磁异常 ; magnetic anomaly ; 华北地区 ; North China
• 页码：p.174-179
• 图表：illus.,1 table,22 refs.
• 分类号：0500
• issnNo：ISSN
• isbnNo：CN62-1048/P

摘要

The authors build the buffer zones with a 30 km radius from the zero-value-lines of all nents of the abnormal geomagnetic field in lithosphere of north China seismic region, and statst cal analyze all the M_S≥4.0 earthquakes in the buffer zones since 1900. The results indicate that there are close relativities among the epicenter distribution of large earthquakes with M_S≥7.0 and the zero-value-lines of geomagnetic declination, north component, east component and vertical component of the abnormal geomagnetic field, and the epicenter distribution has the highest relation to the geomagnetic declination with proportion 83.3%.