| Spectrum characteristics of geoelectric field variation |
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| 作者姓名： | 叶青 杜学彬 周克昌 李宁 马占虎 |
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| 作者单位： | China Earthquake Networks Center China Earthquake Administration，Lanzhou Institute of Earthquake，China Earthquake Administration，China Earthquake Networks Center，China Earthquake Administration，Lanzhou Institute of Earthquake，China Earthquake Administration，Lanzhou Institute of Earthquake，China Earthquake Administration，Beijing 100036，China，Lanzhou 730000，China，Beijing 100036，China，Lanzhou 730000，China，Lanzhou 730000，China |
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| 基金项目： | National Natural Science Foundation of China (40474027) |
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| 摘 要： | The spectrum characteristics of geoelectric diurnal variation and geoelectric storm have been identified by maximum entropy method, based on geoelectric data from seven stations in the Chinese mainland, including Jiayuguan, Changli and Chongming. The study shows that, in geoelectric diurnal variation, the amplitude of the 12 h semidiurnal wave is the largest, followed in turn by the 24~25 h diurnal wave and the 8 h periodic wave; Geoelectric storm usually occurs in a large-scale space, whose spectrum values are higher than those of geoelectric diurnal variation by 2~3 orders of magnitude. A preliminary interpretation is presented for the generative mechanism of predominant waves in geoelectric field variation.
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| 关 键 词： | 地电场 周期 最大熵 日变化 |
| 文章编号： | 1000-9116（2007）04-0405-11 |
| 收稿时间： | 29 January 2007 |
| 修稿时间： | 2007-01-29 |
Spectrum characteristics of geoelectric field variation |
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| Ye Qing , Du Xue-bin , Zhou Ke-chang , Li Ning and Ma Zhan-hu.Spectrum characteristics of geoelectric field variation[J].Acta Seismologica Sinica(English Edition),2007,20(4):405-415. |
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| Authors: | Ye Qing Du Xue-bin Zhou Ke-chang Li Ning and Ma Zhan-hu |
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| Abstract: | The spectrum characteristics of geoelectric diurnal variation and geoelectric storm have been identified by maximum entropy method, based on geoelectric data from seven stations in the Chinese mainland, including Jiayuguan, Changli and Chongming. The study shows that, in geoelectric diurnal variation, the amplitude of the 12 h semidiurnal wave is the largest, followed in turn by the 24~25 h diurnal wave and the 8 h periodic wave; Geoelectric storm usually occurs in a large-scale space, whose spectrum values are higher than those of geoelectric diurnal variation by 2~3 orders of magnitude. A preliminary interpretation is presented for the generative mechanism of predominant waves in geoelectric field variation. |
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| Keywords: | geoelectric field period maximum entropy diurnal variation geoelectric storm |
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