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

作　　者：曹志磊 周琼[2] 张有林[3] 汪继林[2] 薛志明[2] 郎孝龄 

机构地区：[1]泾县地震台,中国安徽宣城242500 [2]蒙城地震台,中国安徽亳州市233527 [3]安徽省地震局,中国合肥230031

出　　处：《地震地磁观测与研究》2008年第5期48-51,共4页Seismological and Geomagnetic Observation and Research

基　　金：安徽省地震局科研合同制课题项目资助

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。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 am- plitude 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 

分 类 号：P315.63[天文地球—地震学]