20世纪中国地震地磁观测与研究回顾  

Review on Seismomagnetic Observation and Research in China in the 20^(th) Century

作　　者：赵育飞 袁洁浩[2] 詹志佳[2] 陈斌[2] 高金田[2] ZHAO Yufei YUAN Jiehao ZHAN Zhijia CHEN Bin GAO Jintian(Yunnan Earthquake Agency, Kunming 650224, Yunnan, China Institute of Geophysics, China Earthquake Administration, Beifing 100081, China)

机构地区：[1]云南省地震局,云南昆明650224 [2]中国地震局地球物理研究所,北京100081

出　　处：《地震研究》2017年第3期422-430,共9页Journal of Seismological Research

基　　金：大华北地区西南缘地磁观测研究(201508009);李建成院士工作站和中国大陆综合地球物理场观测--2017年南北带流磁三分量;总强度数据处理与分析联合资助

摘　　要：通过分析国内外现有磁震资料发现,对于M5.0~7.8地震,在距离震中3~246 km的测点与台站上,观测到了地磁总强度与垂直分量的震磁信息,其幅度为8~20 nT,而前兆时间为20 d^2 a,这种震磁前兆信息是探索地震预测的重要依据。描述并讨论了20世纪初以来中国地震地磁观测与研究,具体分析了唐山M7.8、海城M7.3等地震的磁震信息,说明震磁前兆信息对探索地震预测的重要意义。最后结合工程爆破、地下核试验、密云水库实验、紫荆关等活动断裂的地磁观测试验,模拟地震孕育发生过程当中每个阶段的地磁表现特征。By analyzing the existing seismomagnetic data around the world, we achieve the results that for M5.0 M7.8 earthquakes, at the measuring point and station of 3 - 246 km from the epicenter, the seismomagnetic information of geomagnetic total intensity and vertical component was observed, and the intensity of the seis- momagnetic information reached 8 - 20 nT, and the precursory time is between 20 days and two years. This arti- cle describes and discusses the 20th century China earthquake geomagnetic observation and research, and analy- zes the Tangshan M7. 8, Haicheng M7.3 magnetic anomalies, illustrating the significance of seismic precursor information to explore earthquake prediction. Also combined with the engineering blasting, underground nuclear test, Miyun reservoir, and Zijingguan fracture experiment of geomagnetic observation experiments, we simu- late the process of earthquake nucleation magnetism performance characteristics of each stage. And these experi- mental researches on magnetic observations and earthquake are also very meaningful.

关 键 词：地磁测量 地磁总强度 震磁前兆 构造磁学 岩石圈磁异常变化 地震预测 

分 类 号：P318[天文地球—固体地球物理学]