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蒙城地震台地磁Z分量日变化特征分析
Characteristic of daily variation for the geomagnetic Z-component in Mengcheng Seismic Station
【摘要】 利用蒙城地震台近20年的地磁Z分量观测资料,对磁静日幅度、磁扰日幅度和磁静日低点时间的年变化与长期变化进行了分析,结果表明,Z分量日变化特征明显。由此总结出Z分量变化的一些基本特征,对识别地磁场异常变化或干扰变化具有一定的参考价值。
【Abstract】 In this paper, using geomagnetic Z-component data in Mengcheng Seismic Station nearly 20 years, we analyzed the amplitude and low-point time of magnetically quiet day and the amplitude of magnetically disturbed day′s annual variation and long-term changes. The results showed that the characteristic of daily variation of Z-component obviously, so we can summarize some basic characteristics of changes in the geomagnetic Z-component. In the paper, certain value for reference to recognition interference and abnormal of the geomagnetic field is presented.
【关键词】 Z分量;
磁静日;
磁扰日;
低点时间;
【Key words】 Z-component; magnetically quiet day; magnetically disturbed day; low-point time;
【Key words】 Z-component; magnetically quiet day; magnetically disturbed day; low-point time;
【基金】 安徽省地震局科研合同制课题项目资助
- 【文献出处】 地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2008年05期
- 【分类号】P315.63
- 【被引频次】3
- 【下载频次】39