Numerical study on the response of the Earth's magnetosphere-ionosphere system to a super solar storm

	Numerical study on the response of the Earth's magnetosphere-ionosphere system to a super solar storm
	Wang Chi; Li Hui; Guo XiaoCheng; Ding Kai; Huang ZhaoHui
刊名	SCIENCE CHINA-EARTH SCIENCES
	2012
卷号	55 期号:6 页码:1037-1042
关键词	space weather solar storm magnetosphere-ionosphere system numerical simulation
ISSN号	1674-7313
通讯作者	Wang, C (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
中文摘要	With the approaching of the 24th solar cycle peak year (2012-2014), the impacts of super solar storms on the geospace environment have drawn attentions. Based on the geomagnetic field observations during Carrington event in 1859, we estimate the interplanetary solar wind conditions at that time, and investigate the response of the magnetosphere-ionosphere system to this extreme solar wind conditions using global 3D MHD simulations. The main findings include: 1) The day-side magnetopause and bow shock are compressed to 4.3 and 6.0 Re (Earth radius), and their flanks are also strongly compressed. The magnetopause shifts inside the geosynchronous orbit, exposing geosynchronous satellites in the solar wind in the magnetosheath. 2) During the storm, the region-1 current increases by about 60 times, and the cross polar potential drop increases by about 80 times; the reconnection voltage is about 5 to 6 times larger than the average storms, which means a larger amount of the solar wind energy enters the magnetosphere, resulting in strong space weather phenomena.
英文摘要	With the approaching of the 24th solar cycle peak year (2012-2014), the impacts of super solar storms on the geospace environment have drawn attentions. Based on the geomagnetic field observations during Carrington event in 1859, we estimate the interplanetary solar wind conditions at that time, and investigate the response of the magnetosphere-ionosphere system to this extreme solar wind conditions using global 3D MHD simulations. The main findings include: 1) The day-side magnetopause and bow shock are compressed to 4.3 and 6.0 Re (Earth radius), and their flanks are also strongly compressed. The magnetopause shifts inside the geosynchronous orbit, exposing geosynchronous satellites in the solar wind in the magnetosheath. 2) During the storm, the region-1 current increases by about 60 times, and the cross polar potential drop increases by about 80 times; the reconnection voltage is about 5 to 6 times larger than the average storms, which means a larger amount of the solar wind energy enters the magnetosphere, resulting in strong space weather phenomena.
学科主题	空间物理
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [40921063, 40974106, 40831060]; special fund for State Key Laboratory of Ministry of Science and Technology
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3144]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Wang Chi,Li Hui,Guo XiaoCheng,et al. Numerical study on the response of the Earth's magnetosphere-ionosphere system to a super solar storm[J]. SCIENCE CHINA-EARTH SCIENCES,2012,55(6):1037-1042.
APA	Wang Chi,Li Hui,Guo XiaoCheng,Ding Kai,&Huang ZhaoHui.(2012).Numerical study on the response of the Earth's magnetosphere-ionosphere system to a super solar storm.SCIENCE CHINA-EARTH SCIENCES,55(6),1037-1042.
MLA	Wang Chi,et al."Numerical study on the response of the Earth's magnetosphere-ionosphere system to a super solar storm".SCIENCE CHINA-EARTH SCIENCES 55.6(2012):1037-1042.