The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake

doi:10.1016/j.jseaes.2012.10.034

	The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake
	Le, Huijun 1,2; Liu, Libo 1,2; Liu, Jann-Yeng 3; Zhao, Biqiang 1,2; Chen, Yiding 1,2; Wan, Weixing 1,2
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2013-01-30
卷号	62 页码:476-484
关键词	Ionosphere Total electron content Seismo-ionospheric anomaly
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2012.10.034
文献子类	Article
英文摘要	The GPS total electron content (TEC) data were used to investigate the ionospheric abnormal behaviors prior to the 2011 Tohoku-Oki earthquake. The observations show a significant enhancement in TEC on March 8, 2011, and during the same period the solar activity also has a large increase. Both an empirical model and a theoretical model were used to check whether the TEC anomalies were entirely contributed by the increase in solar radiation. The comparison between the observations and the simulation results shows that only the solar radiation enhancement was not enough to produce the observed significant TEC enhancement. It means that some additional mechanisms, such as the per-earthquake ionospheric disturbance or the geomagnetic activities, may play a significant role in the significant TEC enhancement on March 8. The temporal-spatial distribution of the extreme TEC enhancement within 30 days before the earthquake was particularly pursued. It is found that the extreme enhancement was persistently located in the region adjacent to the epicenter and the magnetic conjugate point for a long time of 16 h. In addition, a geomagnetic disturbance with Kp = 4 occurred on March 7. Therefore, the significant TEC enhancement on March 8 might be related to the M9.0 Tohoku-Oki earthquake and the geomagnetic disturbance. (c) 2012 Elsevier Ltd. All rights reserved.
WOS关键词	TOTAL ELECTRON-CONTENT ; WENCHUAN EARTHQUAKE ; LOWER ATMOSPHERE ; PACIFIC COAST ; SOLAR EUV ; MODEL ; VARIABILITY ; REGION ; MIDDLE
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000315076500035
资助机构	Special Fund for State Seismology Bureau(201008007) ; Special Fund for State Seismology Bureau(201008007) ; National Natural Science Foundation of China(41004069) ; National Natural Science Foundation of China(41004069) ; National Key Basic Research Program of China(2012CB825604) ; National Key Basic Research Program of China(2012CB825604) ; China Postdoctoral Science Foundation(20090460045) ; China Postdoctoral Science Foundation(20090460045) ; Special Fund for State Seismology Bureau(201008007) ; Special Fund for State Seismology Bureau(201008007) ; National Natural Science Foundation of China(41004069) ; National Natural Science Foundation of China(41004069) ; National Key Basic Research Program of China(2012CB825604) ; National Key Basic Research Program of China(2012CB825604) ; China Postdoctoral Science Foundation(20090460045) ; China Postdoctoral Science Foundation(20090460045) ; Special Fund for State Seismology Bureau(201008007) ; Special Fund for State Seismology Bureau(201008007) ; National Natural Science Foundation of China(41004069) ; National Natural Science Foundation of China(41004069) ; National Key Basic Research Program of China(2012CB825604) ; National Key Basic Research Program of China(2012CB825604) ; China Postdoctoral Science Foundation(20090460045) ; China Postdoctoral Science Foundation(20090460045) ; Special Fund for State Seismology Bureau(201008007) ; Special Fund for State Seismology Bureau(201008007) ; National Natural Science Foundation of China(41004069) ; National Natural Science Foundation of China(41004069) ; National Key Basic Research Program of China(2012CB825604) ; National Key Basic Research Program of China(2012CB825604) ; China Postdoctoral Science Foundation(20090460045) ; China Postdoctoral Science Foundation(20090460045)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/87650]
专题	中国科学院地质与地球物理研究所
通讯作者	Le, Huijun
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Ionospher Environm, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China 3.Natl Cent Univ, Inst Space Sci, Chungli 32054, Taiwan
推荐引用方式 GB/T 7714	Le, Huijun,Liu, Libo,Liu, Jann-Yeng,et al. The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake[J]. JOURNAL OF ASIAN EARTH SCIENCES,2013,62:476-484.
APA	Le, Huijun,Liu, Libo,Liu, Jann-Yeng,Zhao, Biqiang,Chen, Yiding,&Wan, Weixing.(2013).The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake.JOURNAL OF ASIAN EARTH SCIENCES,62,476-484.
MLA	Le, Huijun,et al."The ionospheric anomalies prior to the M9.0 Tohoku-Oki earthquake".JOURNAL OF ASIAN EARTH SCIENCES 62(2013):476-484.