Response of the American equatorial and low-latitude ionosphere to the X1.5 solar flare on 13 September 2005

doi:10.1002/2014JA020536

	Response of the American equatorial and low-latitude ionosphere to the X1.5 solar flare on 13 September 2005
	Xiong, Bo 1,2,3; Wan, Weixing 3; Zhao, Biqiang 3; Yu, You 3; Wei, Yong 3; Ren, Zhipeng 3; Liu, Jing 3
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2014-12-01
卷号	119 期号:12
ISSN号	2169-9380
DOI	10.1002/2014JA020536
文献子类	Article
英文摘要	Based on the coordinated observations by the incoherent scatter radar (ISR), ionosonde, magnetometers, and GPS receivers, the electrodynamic effects on the equatorial and low-latitude ionosphere have been investigated during the intense solar flare (X1.5/2B) on 13 September 2005. In the initial stage of the flare, the ISR and ionosonde measurements at Jicamarca show the decreases of 10.14 m/s and 20km in the upward vertical E x B drift velocity and the F-2 region peak height, respectively, while equatorial electrojet (EEJ) strength over American sector indicates a sudden increase of 53.7 nT. The decrease of the upward vertical E x B drift velocity reveals the weakening of eastward electric field during the flare, which is firstly and directly observed by instrument. It is well known that the variation of equatorial electric field is mainly attributed to the ionospheric dynamo electric field and partially affected by the penetration of interplanetary electric field. The observations during this flare suggest that the flare-induced increase of Cowling conductivity changes the ionospheric dynamo electric field and further results in the weakening of eastward electric field and the decrease of the upward vertical E x B drift velocity. Meanwhile, the upward vertical E x B drift velocity and the EEJ strength during the flare are negatively correlated, which is contrary to the knowledge established by Anderson et al. (2002) based on 10 days of observations in the Peruvian longitude sector. The difference may be caused by the flare-induced enhancement of Cowling conductivity. In addition, GPS total electron content (TEC) observations from six stations in the American equator and low latitudes show an enhancement of 1.47-3.09 TEC units. The measurements of GPS and ISR indicate that the contribution of the enhanced photoionization to the increase of TEC is more than that of electrodynamic effect during the initial stage of the intense flare.
WOS关键词	ELECTRON-DENSITY PROFILES ; F-REGION ; X-RAY ; VLF PHASE ; GPS ; NETWORK ; ENHANCEMENTS ; FIELDS ; TIME
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000349161100069
资助机构	National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; 41131066) ; 41131066) ; 41131066) ; 41131066) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; 41131066) ; 41131066) ; 41131066) ; 41131066) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; 41131066) ; 41131066) ; 41131066) ; 41131066) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; National Natural Science Foundation of China(41404127 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; China Postdoctoral Science Foundation(2012M520370 ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; Chinese Academy of Sciences(KZZD-EW-01-2) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; NSF through Cornell University(AGS-0905448) ; 41131066) ; 41131066) ; 41131066) ; 41131066) ; 2014T70118) ; 2014T70118) ; 2014T70118) ; 2014T70118)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86002]
专题	中国科学院地质与地球物理研究所
通讯作者	Xiong, Bo
作者单位	1.North China Elect Power Univ, Sch Math & Phys, Baoding, Peoples R China 2.Chinese Acad Sci, Sate Key Lab Space Weather, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Bo,Wan, Weixing,Zhao, Biqiang,et al. Response of the American equatorial and low-latitude ionosphere to the X1.5 solar flare on 13 September 2005[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(12).
APA	Xiong, Bo.,Wan, Weixing.,Zhao, Biqiang.,Yu, You.,Wei, Yong.,...&Liu, Jing.(2014).Response of the American equatorial and low-latitude ionosphere to the X1.5 solar flare on 13 September 2005.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(12).
MLA	Xiong, Bo,et al."Response of the American equatorial and low-latitude ionosphere to the X1.5 solar flare on 13 September 2005".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.12(2014).