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| 关于汶川8.0级地震前电磁扰动异常的讨论 | |
| 引用本文： | 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. |
| 作者姓名： | 李军辉 李琪 王行舟 陶月潮 何康 郑海刚 王俊 |
| 作者单位： | 1. 安徽省地震局,安徽合肥230031;蒙城野外地球物理观测站,安徽合肥230031 2. 中国地震局地球物理所,北京,100081 3. 安徽省地震局,安徽合肥,230031 |
| 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);中国地震局震情跟踪任务(2010020705)联合资助 |
| 摘 要： | 通过对汶川8.0级地震前四川金河台电磁扰动数据变化的研究,结果显示:①电磁扰动0.001～1 Hz在震前每天06:00～22:00出现非脉冲性高值波动变化,在12:00和18:00达到最大；1～10 Hz在2008年1～3月出现与超低频类似的高值变化,最大幅度为300 mV; 10～20Hz无明显异常.②分析了电磁扰动... |
| 关 键 词： | 汶川8.0地震 电磁扰动 异常 |
Studies on Anomalies of Electromagnetic Disturbance before the Wenchuan M_S8.0 Earthquake |
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| LI Junhui , LI Qi , WANG Xingzhou , TAO Yuechao , HE Kang , ZHENG Haigang , WANG Jun.Studies on Anomalies of Electromagnetic Disturbance before the Wenchuan M_S8.0 Earthquake[J].South China Journal of Seismology,2011,31(4):76-84. | |
| Authors: | LI Junhui LI Qi WANG Xingzhou TAO Yuechao HE Kang ZHENG Haigang WANG Jun |
| Institution: | 1 (1.Earthquake Administration of Anhui Province,Hefei 230031,China;2.National Geophysical Observatory at Mengcheng,Hefei 230031,China;3.Institutes of Geophysics,china Earthquake Administration,Beijing 100086,China) |
| 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： ①The first pass （0.001-1Hz） 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. ②The 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. ③The 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 Ms8.0 earthquake, but it may be ambient interference. |
| Keywords: | Wenchuan Ms8 0 earthquake Electromagnetic disturbance Anomalous analysis |
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