| 汶川8.0级大地震前电磁扰动异常变化特征初步研究 |
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| 引用本文： | 张建国,刘晓灿,姚丽,马新欣,袁亚红,尹小兵.汶川8.0级大地震前电磁扰动异常变化特征初步研究[J].地震地磁观测与研究,2010,31(5):56-60. |
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| 作者姓名： | 张建国 刘晓灿 姚丽 马新欣 袁亚红 尹小兵 |
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| 作者单位： | [1]邯郸地震中心台,中国河北056006 [2]中国地震局地球物理研究所,中国北京100081 [3]红山基准地震台,中国河北055350 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项，北京市自然基金，中国地震局三结合课题，河北省地震局重点项目 |
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| 摘 要： | 利用电磁波扰动理论,研究汶川5·12大地震前,金河、剑阁、二砂3个台站的电磁波异常变化特征。结果表明:①震前3个台站均出现电磁扰动异常,以金河、剑阁地震台显著;②电磁扰动前兆异常在时间进程上有明显的阶段性变化;③随距震中距半径的增大,电磁扰动值逐步衰减。
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| 关 键 词： | 汶川8．0级地震 电磁扰动 异常特征 |
Study on anomalous change characters of electromagnetic disturbance before the Wenchuan MS 8.0 earthquake |
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| Zhang Jianguo,Liu Xiaocan,Yao Li,Ma Xinxin,Yuan Yahong,Yin Xiaobing.Study on anomalous change characters of electromagnetic disturbance before the Wenchuan MS 8.0 earthquake[J].Seismological and Geomagnetic Observation and Research,2010,31(5):56-60. |
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| Authors: | Zhang Jianguo Liu Xiaocan Yao Li Ma Xinxin Yuan Yahong Yin Xiaobing |
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| Institution: | 1. Handan Seismic Station, Hebei Province 056006, China 2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China 3. Hongshan Seismic Station, Hebei Province 055350, China) |
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| Abstract: | Using the theory of electromagnetic disturbance, we analyzed the anomalous characters of electromagnetic disturbance observed at Jinhe, Jiange and Ersha seismic stations during the Wenchuan Ms 8.0 earthquake. The results show that, firstly, the electromagnetic disturb- ance of three stations all appears anomalous character before earthquake. It is especially ob- vious at the Jinhe and Jiange seismic stations. Secondly, electromagnetic disturbance anomalies have clear stage change before the earthquake..And thirdly, the farther the distance of epicenter is, the smaller the electromagnetic disturbance intension. |
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| Keywords: | Wenchuan Ms 8 0 earthquake electromagnetic disturbance anomalous character |
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