华南地震2011，Vol.31Issue(4)：76-84,9.
关于汶川8.0级地震前电磁扰动异常的讨论
Studies on Anomalies of Electromagnetic Disturbance before the Wenchuan Ms8.0 Earthquake
摘要
Abstract
Using the theory of electromagnetic disturbance, the paper analyzed the data of electromagnetic disturbance before Wenchuan Ms8.0 earthquake observed at Jinhe station in Sichuan Province. The results are summarized as followed: ① The first pass (0.001 ~lHz) of electromagnetic disturbance shows anomalies from April of 2007 to May of 2008. The maximum amplitude is up to 600 mV. The anomalous of electromagnetic disturbance is not impulse. The abnormal of the first pass varies at high value during daytime (06:00 ~22:00) and returns to normal value during nighttime (00:00~06:00) every day. The amplitude reached maximum at 12: 00 and 18:00. The second pass (1-10 Hz) begins to be abnormal from January to March and returned to normal value from April of 2008. The maximum amplitude of the second pass is 300 mV. The anomalous of the third pass (10-20 Hz) is not very obviously. ② The paper compared the abnormal variation with the released energy and frequency of earthquakes around Jinhe station in 300 km. The results show that the seismic activity is not increased clearly from April 2007 to May 2008. ③ The paper analyzed the minute data of electromagnetic disturbance day by day. The results show that the impulse increased in March 2008, more at daytime and less in nighttime. In a word, we could conclude that the abnormal variation of electromagnetic disturbance observed at Jinhe station is not the premonition of Wenchuan Mss8.0 earthquake, but it may be ambient interference.关键词
汶川8.0地震/电磁扰动/异常Key words
Wenchuan Ms8.0 earthquake/ Electromagnetic disturbance/ Anomalous analysis分类
天文与地球科学引用本文复制引用
李军辉,李琪,王行舟,陶月潮,何康,郑海刚,王俊..关于汶川8.0级地震前电磁扰动异常的讨论[J].华南地震,2011,31(4):76-84,9.基金项目
中国地震局地球物理研究所中央级公益性科研院所基本科研业务专项项目(DQJB11C10)和中国地震局震情跟踪任务(2010020705)联合资助. （DQJB11C10）
