| 地电场观测及强震前大地电位异常特征 |
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| 引用本文： | 李江华,曾柯,冯家铎.地电场观测及强震前大地电位异常特征[J].西北地震学报,1996,18(4):9-16. |
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| 作者姓名： | 李江华 曾柯 冯家铎 |
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| 作者单位： | [1]武汉市地震办公室 [2]武汉市岱山中学 |
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| 摘 要： | 通过平行方位相关分析，纯异常矢量比和功率谱分析，Ｐｃ地电脉动，动电暴湾扰等多种方法论证了岱山中学地电场的短周期变化属于大地电位变化，该观测点是观测大地电位变化的敏感点。
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| 关 键 词： | 地电场 临震异常 强震 电位异常 地震前兆 |
| 收稿时间： | 1995/8/15 0:00:00 |
| 修稿时间： | 1995/9/27 0:00:00 |
THE OBSERVATIONS OF ELECTROTELLURIC FIELD AND ANOMALY CHARACTERS OF GEODETIC POTENTIAL BEFORE STRONG EARTHQUAKES |
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| Li Jianghu,Zeng Ke and Feng Jiaduo.THE OBSERVATIONS OF ELECTROTELLURIC FIELD AND ANOMALY CHARACTERS OF GEODETIC POTENTIAL BEFORE STRONG EARTHQUAKES[J].Northwestern Seismological Journal,1996,18(4):9-16. |
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| Authors: | Li Jianghu Zeng Ke and Feng Jiaduo |
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| Institution: | Seismological Office of Wuhan City,Seismological Office of Wuhan City and Daishan Middle School, Wuhan City |
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| Abstract: | It is considered that the shost period variations of electrotelluric field at Daishan middle school station belong to the geodetic potential through the analyses of parallel direction correlation,the pure anomaly vector ratio,P C electrotelluric pulsation,geoelectric bay,etc.The station is highly sensitive to geodetic potential change.In addition,the characters of geodetic potential anomaly before the strong earthquakes occurring in Lancang,Batang,etc.are analyzed.These anomaly variations affected by the ultra low frequency electromagnetic radiation occurred within 8.8-32.5 hours before earthquakes and lasted the time from 20 min to 75 min. |
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| Keywords: | Geoelectric field Impending earthquake anomaly Strong earthquake |
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