A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis

doi:10.1016/j.jseaes.2018.10.007

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis
	Liu, Jing 1; Wan, Weixing 2; Zhou, Chen 3; Zhang, Xuemin 1; Liu, Yi 3; Shen, Xuhui 4
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2019-03-01
卷号	171 页码:225-232
关键词	GPS TEC EOF method Seismo-ionospheric disturbance
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2018.10.007
英文摘要	In this study, an ionospheric logTEC model has been constructed using an empirical orthogonal function (EOF) decomposition method. The main orders (1-9 orders) of this EOF model represent the ionospheric background, while the rest high orders represent ionospheric TEC perturbations. Based on this model, logTEC data during 16 Ms >= 8.0 earthquakes from 2000 to 2012 have been analyzed. We found that ionospheric disturbances occurred in 10 earthquakes. Ionospheric abnormities were clearly observed 5 days before the earthquakes, but ionospheric disturbances can also be seen 1 day before, and 1 day and 2 days after the earthquakes. For the TEC data, the possibility of positive (enhanced TEC) and negative (decreased TEC) abnormities is almost the same. Furthermore, by using the simulation results of ionospheric electric field and SAMI2 model, we show that an abnormal westward electric field can lead to electron density enhancements equatorward and decrease polarward of the epicenters, and vice versa for an eastward abnormal electric field.
资助项目	Basal Research Fund[2015IES0101] ; China Scholarship Fund, International Cooperation Project[2014DFR21280] ; National Natural Science Foundation of China[41511130032]
WOS关键词	ELECTRIC-FIELD PENETRATION ; ANOMALIES ; MODEL ; DEMETER
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000460709300019
资助机构	Basal Research Fund ; Basal Research Fund ; China Scholarship Fund, International Cooperation Project ; China Scholarship Fund, International Cooperation Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Basal Research Fund ; Basal Research Fund ; China Scholarship Fund, International Cooperation Project ; China Scholarship Fund, International Cooperation Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Basal Research Fund ; Basal Research Fund ; China Scholarship Fund, International Cooperation Project ; China Scholarship Fund, International Cooperation Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Basal Research Fund ; Basal Research Fund ; China Scholarship Fund, International Cooperation Project ; China Scholarship Fund, International Cooperation Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90895]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Liu, Jing
作者单位	1.China Earthquake Adm, Inst Earthquake Forecasting, Beijing 100036, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Wuhan Univ, Wuhan 430072, Hubei, Peoples R China 4.China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jing,Wan, Weixing,Zhou, Chen,et al. A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,171:225-232.
APA	Liu, Jing,Wan, Weixing,Zhou, Chen,Zhang, Xuemin,Liu, Yi,&Shen, Xuhui.(2019).A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis.JOURNAL OF ASIAN EARTH SCIENCES,171,225-232.
MLA	Liu, Jing,et al."A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis".JOURNAL OF ASIAN EARTH SCIENCES 171(2019):225-232.