IGGCAS OpenIR  > 地球与行星物理院重点实验室
A study of the ionospheric disturbances associated with strong earthquakes using the empirical orthogonal function analysis
Liu, Jing1; Wan, Weixing2; Zhou, Chen3; Zhang, Xuemin1; Liu, Yi3; Shen, Xuhui4
2019-03-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume171Pages:225-232
AbstractIn 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.
KeywordGPS TEC EOF method Seismo-ionospheric disturbance
DOI10.1016/j.jseaes.2018.10.007
Funding OrganizationBasal 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
WOS KeywordELECTRIC-FIELD PENETRATION ; ANOMALIES ; MODEL ; DEMETER
Language英语
Funding ProjectBasal Research Fund[2015IES0101] ; China Scholarship Fund, International Cooperation Project[2014DFR21280] ; National Natural Science Foundation of China[41511130032]
Funding OrganizationBasal 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
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000460709300019
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90895
Collection地球与行星物理院重点实验室
Corresponding AuthorLiu, Jing
Affiliation1.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
Recommended Citation
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.
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