The Changes of the Ground and Fields before Several Ionosphere Electric/Magnetic Great Earthquakes

详细信息   

• 责任者：Liu Jun (Lanzhou Institute of Seismology ; China Earthquake Administration ; Lanzhou 730000 ; China) ; Du Xuebin
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(11)
• 关键词：地震预测 ; earthquake prediction ; 电磁场 ; electromagnetic field ; 电离层 ; ionosphere
• 页码：p.2885-2897
• 图表：8 illus., 56 refs.
• 分类号：0500
• 出版序号：20122252
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

This paper studied the changes of the geo-electric, geo-magnetic fields around the  M_S8. 0 Wenchuan earthquake  2008 in Sichuan Province, the M_S7.3 Yutian earthquake in Xinjiang and the M_S7.1 Yushu earthquake in Qinghai Province and their strong aftershocks. The results show that 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. Finally, the authors discussed the mechanism of the electromagnetic phenomena on the ground and in the ionosphere.