浅析井下地磁场观测长短周期变化特征  

Analysis on Long and Short Period Variation of Underground Geomagnetic Observation Data

作　　者：王莉森[1] 殷金平 边鹏飞[1] 牛露[1] WANG Lisen;YIN Jinping;BIAN Pengfei;NIU Lu(Hebei Earthquake Agency,Hebei Shijiazhuang 050021,China;Ganzhou Earthquake Agency,Jiangxi Ganzhou 341000,China)

机构地区：[1]河北省地震局,河北石家庄050021 [2]赣州市地震局,江西赣州341000

出　　处：《四川地震》2018年第3期13-15,32,共4页Earthquake Research in Sichuan

摘　　要：自然电磁场环境受到日趋复杂的人为干扰,有的地方已经严重影响地面地磁场观测,而井下地磁观测则可以大部分抑制地表干扰。但是,由于井下观测时间短,地磁场的长、短周期变化是否符合当下地球磁场变化规律是一个需要回答的问题。以唐山市滦县深井站、相邻的昌黎台和大连台地磁场观测资料为研究对象,从这3个观测点位的地磁场长、短周期变化进行相互间一致性分析,结果表明,滦县地磁场深井观测长、短周期变化与昌黎台、大连台观测值变化是一致的。The ground geomagnetic observation environment has seriously been affected by increasingly complex electromagnetic intefferences. The underground observation, however, can effectively avoid and suppress the electro- magnetic shallow surface intefference. The underground observation provides a new idea for obtaining effective mag- netic field data. Since the underground observation time is short, and whether the changes of geomagnetic field long and short cycle accord with the earth magnetic field change is still a scientific problem that needs to be solved. In this paper, the geomagnetic field observation data from Luanxian deep well station are compared with that from adjacent Changli platform and Dalian platform. The results show that the data changes of Luanxian deep well station is consistence with the data changes from Changli and Dalian geomagnetic observation.

关 键 词：电磁环境干扰 井下观测 长周期 短周期 特征 

分 类 号：P318.11[天文地球—固体地球物理学]