| 几次大震前的地面和空间电磁场变化 |
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| 引用本文： | 刘君,杜学彬,范莹莹,安张辉,解滔,郑国磊,谭大成,陈军营.几次大震前的地面和空间电磁场变化[J].地球物理学报,2011,54(11):2885-2897. |
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| 作者姓名： | 刘君 杜学彬 范莹莹 安张辉 解滔 郑国磊 谭大成 陈军营 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,兰州 730000;
2. 兰州地球物理国家野外科学观测研究站,兰州 730000;
3. UMR6525-CNRS-OPGC, 5 rue Kessler, 63038 Clermont-Ferrand, France |
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| 基金项目： | 国家科技部支撑计划专题(2008BAC35B01-8)和国家科技支撑计划课题(2006BAC01B02-04-03)资助. |
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| 摘 要： | 本文应用非线性谱估计方法(MEM方法)、电/磁场脉冲能量统计方法,处理了四川汶川MS8.0 (2008)、新疆于田MS7.3 (2008)和青海玉树MS7.1 (2010) 地震及强余震附近的地面电/磁场和Demeter卫星电离层磁场观测数据,研究了地震电/磁场变化,得到:在震中附近及周围出现了震前地电/地磁场极低频成...
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| 关 键 词： | 地震 Demeter 电场 磁场 电磁扰动 |
| 收稿时间： | 2011-03-08 |
The changes of the ground and ionosphere electric/magnetic fields before several great earthquakes |
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| LIU Jun,DU Xue-Bin,Jacques Zlotnicki,FAN Ying-Ying,AN Zhang-Hui,XIE Tao,ZHENG Guo-Lei,TAN Da-Cheng,CHEN Jun-Ying.The changes of the ground and ionosphere electric/magnetic fields before several great earthquakes[J].Chinese Journal of Geophysics,2011,54(11):2885-2897. |
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| Authors: | LIU Jun DU Xue-Bin Jacques Zlotnicki FAN Ying-Ying AN Zhang-Hui XIE Tao ZHENG Guo-Lei TAN Da-Cheng CHEN Jun-Ying |
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| Affiliation: | 1. Lanzhou Institute of Seismology of China Earthquake Administration, Lanzhou 730000, China;
2. Lanzhou National Observatory of Geophysics, Lanzhou 730000, China;
3. UMR6525-CNRS-OPGC, 5 rue Kessler, 63038 Clermont-Ferrand, France |
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| Abstract: | This paper studied the changes of the geo-electric, geo-magnetic fields around the MS8.0 Wenchuan earthquake in Sichuan (2008), the MS7.3 Yutian earthquake in Xinjiang (2008) and the MS7.1 Yushu earthquake in Qinghai (2010) and their strong aftershocks, and the changes of the ionospheric magnetic field over the Wenchuan, Yutian and Yushu areas using the non-linear power spectrum estimation method (Maximum Entropy Method, for short "MEM") and the statistical methods of the electric/magnetic field pulse energy. Some significant geo-electromagnetic phenomena were seen, which included the increased power spectrum density (PSD) of the ELF components of the geo-electric and geo-magnetic fields, and the increases of the electromagnetic pulse energy of the fields recorded at the geo-electromagnetic disturbance stations and the geo-electric field stations. It is very interesting that such electromagnetic anomalous phenomena appeared on the ground as well as in the ionosphere in the same time period. Finally, we discussed the mechanism of the electromagnetic phenomena on the ground and in the ionosphere. |
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| Keywords: | Earthquake Demeter Electric field Magnetic field Electromagnetic disturbance |
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