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地磁垂直分量日变幅逐日比及其与地震关系的探讨
Ratio of daily variation amplitude of geomagnetic vertical component and its relation with earthquake
【摘要】 分析了地磁垂直分量日变幅逐日比值的高值异常与其后地震的关系,发现它们之间有良好的对应,通过分析地磁垂直分量谐波幅度的逐日比,作者认为这种高值变化可能与其间地下介质电阻率下降有关,但也有可能是外场变化所致。
【Abstract】 In this paper, we found that the ratios of daily variation amplitude of vertical geomagnetic component can show the conductivity change of the underground medium. We also give calculation using day - by - day ratio method based on the information above, and we found this method is feasible and effective.
【关键词】 地磁场;
垂直分量日变幅;
比值;
前兆异常;
【Key words】 Geomagnetic field; Daily variation amplitude of vertical component; Ratio; Precursory anomaly;
【Key words】 Geomagnetic field; Daily variation amplitude of vertical component; Ratio; Precursory anomaly;
- 【文献出处】 华南地震 ,South China Journal of Seismology , 编辑部邮箱 ,2001年02期
- 【分类号】P315.72
- 【被引频次】22
- 【下载频次】92