锦州义县地电场干扰因素的识别与分析
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摘要
本文主要利用锦州义县地震站"十五"观测以来的地电场分钟值资料,对观测中常见的干扰因素进行了详细的识别与归类,并对干扰特征和判别原理进行了分析与探讨。研究结果表明:在地电场观测过程中存在地电阻率同场观测干扰、磁暴干扰、雷电干扰、降雨干扰、游散电流变化干扰、电极不稳定引起的数据漂移及观测系统变化干扰、仪器死机、重启仪器造成数据丢失干扰等。
Based on the geoelectric field minute value data of the Jinzhou Yixian Seismic Station since the 10th five-year plan,this paper analyzed the identification and classification of the common interference factors in seismological observation.The interference features and the discrimination principles are also introduced.The results showed that there were many interference factors in the geoelectric field observation,such as the earth resistivity observation at the same field,geomagnetic storm,lightening,rainfall,stray current changes,drift data and the changes of the observation system by the unstable plate,system crash,and data lost by the system restarting.
Based on the geoelectric field minute value data of the Jinzhou Yixian Seismic Station since the 10th five-year plan,this paper analyzed the identification and classification of the common interference factors in seismological observation.The interference features and the discrimination principles are also introduced.The results showed that there were many interference factors in the geoelectric field observation,such as the earth resistivity observation at the same field,geomagnetic storm,lightening,rainfall,stray current changes,drift data and the changes of the observation system by the unstable plate,system crash,and data lost by the system restarting.
引文
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[8]马钦忠.地电场多极距观测装置系统与文安Ms5.1地震前首都圈地电场异常研究[J].地震学报,2008,30(6):615-625.
[2]马钦忠,钱家栋.地下电性非均匀结构对地电场信号的影响[J].地震,2003,23(1):1-7.
[3]林向东,徐平,鲁跃,等.地电场观测中几种常见干扰[J].华北地震科学,2007,25(1).
[4]叶青,杜学彬,周克昌,等.大地电场变化的频谱特征[J].地震学报,2007,29(4).
[5]谢伦,濮祖荫,周煦之,等.磁暴环电流形成过程[J].科学通报,2004,49(6):603-610.
[6]刘运生,毛春长,等.《地球物理学简明教程》[M].北京:地震出版社,1996:153.
[7]王兰炜,赵家骝,庞丽娜.自适应噪声消除器在地电场观测数据处理中的应用[J].地震,2006,26(1):87-92.
[8]马钦忠.地电场多极距观测装置系统与文安Ms5.1地震前首都圈地电场异常研究[J].地震学报,2008,30(6):615-625.
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