| Field-Aligned Electrons in Polar Region Observed by Cluster on 30 September 2001 | |
| Zhang Zi-Ying; Shi Jian-Kui; Cheng Zheng-Wei; Fazakerley, Andrew; Zhang, ZY (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China. | |
| Department | 空间科学部 |
| Source Publication | CHINESE PHYSICS LETTERS
 |
| 2012 | |
| Volume | 29Issue:9Pages:99401 |
| ISSN | 0256-307X |
| Language | 英语 |
| Abstract | The physical process in the Earth's polar region is very complex and still needs to be further studied. Using the data from Cluster satellite measurement, an analysis on field-aligned electrons in the mid-latitude cusp on 30 September 2001 has been performed. The satellite observed a down-flowing electron event in the low-latitude boundary and a sequential up-flowing electron event in the high-latitude boundary of the cusp region. The down-flowing electron had a velocity as high as 500 km/s and a flux of 2.0 x 10(9) cm(-2).s(-1). The up-flowing electron had a velocity up to 1200 km/s and a flux of 4.9 x 10(9) cm(-2).s(-1). Both the velocity and the flux observed in this event are the maximum values of the up-flowing electrons observed by all satellites to date. The electron is the main contributor for the field-aligned current in this event. The physical mechanism is also discussed. The down-flowing electron in the low-latitude boundary of the cusp region may result from solar wind injecting during the southward IMF, and the up-flowing electrons in the high-latitude boundary of cusp may result from mirroring of the solar wind, or from the ionospheric up-flowing electrons which have been accelerated.; The physical process in the Earth's polar region is very complex and still needs to be further studied. Using the data from Cluster satellite measurement, an analysis on field-aligned electrons in the mid-latitude cusp on 30 September 2001 has been performed. The satellite observed a down-flowing electron event in the low-latitude boundary and a sequential up-flowing electron event in the high-latitude boundary of the cusp region. The down-flowing electron had a velocity as high as 500 km/s and a flux of 2.0 x 10(9) cm(-2).s(-1). The up-flowing electron had a velocity up to 1200 km/s and a flux of 4.9 x 10(9) cm(-2).s(-1). Both the velocity and the flux observed in this event are the maximum values of the up-flowing electrons observed by all satellites to date. The electron is the main contributor for the field-aligned current in this event. The physical mechanism is also discussed. The down-flowing electron in the low-latitude boundary of the cusp region may result from solar wind injecting during the southward IMF, and the up-flowing electrons in the high-latitude boundary of cusp may result from mirroring of the solar wind, or from the ionospheric up-flowing electrons which have been accelerated. |
| Indexed By | SCI |
| Funding Project | 中国科学院空间科学与应用研究中心 |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/3094 |
| Collection | 空间科学部 |
| Corresponding Author | Zhang, ZY (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhang Zi-Ying,Shi Jian-Kui,Cheng Zheng-Wei,et al. Field-Aligned Electrons in Polar Region Observed by Cluster on 30 September 2001[J]. CHINESE PHYSICS LETTERS,2012,29(9):99401. |
| APA | Zhang Zi-Ying,Shi Jian-Kui,Cheng Zheng-Wei,Fazakerley, Andrew,&Zhang, ZY .(2012).Field-Aligned Electrons in Polar Region Observed by Cluster on 30 September 2001.CHINESE PHYSICS LETTERS,29(9),99401. |
| MLA | Zhang Zi-Ying,et al."Field-Aligned Electrons in Polar Region Observed by Cluster on 30 September 2001".CHINESE PHYSICS LETTERS 29.9(2012):99401. |
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