浅析井下地磁场观测长短周期变化特征
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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 interferences. The underground observation,however,can effectively avoid and suppress the electromagnetic shallow surface interference. The underground observation provides a new idea for obtaining effective magnetic 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.
The ground geomagnetic observation environment has seriously been affected by increasingly complex electromagnetic interferences. The underground observation,however,can effectively avoid and suppress the electromagnetic shallow surface interference. The underground observation provides a new idea for obtaining effective magnetic 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.
引文
徐纪人,赵志新.2009.深井地球物理观测的最新进展与中国大陆科学钻探长期观测[J].地球物理学进展,24(4):1176-1182.
王莉森,张云昌,殷金平,等.2017.滦县地磁场井下观测系统抗干扰效果[J].地震地磁观测与研究,(4):98-104.
张秀霞,孙春仙,陈健,等.2008.数字化地磁数据的空间相关分析[J].地震地磁观测与研究,(6),134-138.
阿里普别科夫.2007.阿拉木图和乌鲁木齐实验场[J].内陆地震,21(2),177-183.
王莉森,张云昌,殷金平,等.2017.滦县地磁场井下观测系统抗干扰效果[J].地震地磁观测与研究,(4):98-104.
张秀霞,孙春仙,陈健,等.2008.数字化地磁数据的空间相关分析[J].地震地磁观测与研究,(6),134-138.
阿里普别科夫.2007.阿拉木图和乌鲁木齐实验场[J].内陆地震,21(2),177-183.