地电场日变幅与地电暴分析
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摘要
利用昌黎台地电场资料分析地电场日变幅季节变化特征,显示有季节效应,EW、SN测向夏季日变幅地震最大,而出现最小值的季节两测向表现不一。分析认为,与地电场观测信号的复杂多样性有关。地电暴可以记录到磁暴急始变幅、初相、主相的变化形态,但由于电场和磁场之间存在一阶差分的关系,并不是所有地电暴都和地磁暴变化一致,甚至有些地电暴没有变化形态,而是出现高频上下起伏的脉冲形式。利用多台地电场资料,对同一个K指数为7的磁暴进行急始变幅、扰动最大变幅分析,结果显示,各台不尽相同,可能与台址介质的电性结构有关。
In this paper, daily geoelectric amplitude recorded in Changli Seismic Station was analyzed. It showes that the daily geoelectric amplitude has season effect, EW and SN ganiometries have the maximum daily amplitudes in summer, but the minimum value of EW and SN ganiometries showed difference, the reason was to related to the complicated signal of geoelecticity. The electric storm could recorded the sudden commencement amplitude, initial phase and magnafacies, but none of all the electric storms and geomagnetic storms had the same change, even some electric storms had no change type, it is high frequency pulse mode in electici storms record, the reason was to be the first order difference. The geomagnetic storm of K=7 was analyzed in several stations, it is found the sudden commencement amplitude, perturbation maximum amplitude had different degree change, probably it is related to the electric property structure of station.
In this paper, daily geoelectric amplitude recorded in Changli Seismic Station was analyzed. It showes that the daily geoelectric amplitude has season effect, EW and SN ganiometries have the maximum daily amplitudes in summer, but the minimum value of EW and SN ganiometries showed difference, the reason was to related to the complicated signal of geoelecticity. The electric storm could recorded the sudden commencement amplitude, initial phase and magnafacies, but none of all the electric storms and geomagnetic storms had the same change, even some electric storms had no change type, it is high frequency pulse mode in electici storms record, the reason was to be the first order difference. The geomagnetic storm of K=7 was analyzed in several stations, it is found the sudden commencement amplitude, perturbation maximum amplitude had different degree change, probably it is related to the electric property structure of station.
引文
① 席继楼,谭大诚,叶青.2008． 中强地震前后地电场观测数据变化研究
② 杜学彬,叶青,李宁.2007． 地电场日变化研究
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解用明,韩和平,高登平,等.大地电场日变化特征[J].山西地震,2006,127(3) :1-4．
马钦忠,钱家栋.地下电性非均匀结构对地电场信号的影[J].地震,2003,23(1) :1-7．
毛桐恩,席继楼,王燕琼,等.地震过程中的大地电场变化特征[J].地球物理学报,1999,42(4) :520-527．
席继楼,邱颖,刘超等.电极极化电位对地电场观测影响研究[J].地震地磁观测与研究,2008,29(6) :22-26
徐文耀.地球电磁现象物理学[M].合肥:中国科学技术大学出版社,2009．
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) :382-390．
② 杜学彬,叶青,李宁.2007． 地电场日变化研究
国家地震局科技监测司.地震电磁观测技术[M].北京:地震出版社,1995．
解用明,韩和平,高登平,等.大地电场日变化特征[J].山西地震,2006,127(3) :1-4．
马钦忠,钱家栋.地下电性非均匀结构对地电场信号的影[J].地震,2003,23(1) :1-7．
毛桐恩,席继楼,王燕琼,等.地震过程中的大地电场变化特征[J].地球物理学报,1999,42(4) :520-527．
席继楼,邱颖,刘超等.电极极化电位对地电场观测影响研究[J].地震地磁观测与研究,2008,29(6) :22-26
徐文耀.地球电磁现象物理学[M].合肥:中国科学技术大学出版社,2009．
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) :382-390．
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