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本文引入地壳波导理论,对1979年7月9日江苏溧阳6级地震前南京卫岗电磁信息观测点所记录到的超低频电磁波信号进行研究,估算出接收点的场强为10~2—10~3微伏/米。辐射源电流矩为10~7安·米。
In this paper, crustal waveguide theory is introduced to study the ultra-low frequency electromagnetic wave signals recorded at Nanjing Weigang electromagnetic information observation point before the MS6 Liyang earthquake on July 9, 1979, and the field strength of the receiving point is estimated to be 10 ~ 2-10 ~ 3 microvolts / meter. Radiation source current moment is 10 ~ 7 A · m.