| Magnetospheric vortices and their global effect after a solar wind dynamic pressure decrease | |
| Zhao, HY; Shen, XC; Tang, BB; Tian, AM; Shi, QQ; Weygand, JM; Yao, ZH; Zong, QG; Fu, SY; Yao, ST; Xiao, T; Pu, ZY; Shi, QQ (reprint author), Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China. | |
| Department | 空间科学部 |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 2016 | |
| Volume | 121Issue:2Pages:1071-1077 |
| ISSN | 2169-9380 |
| Language | 英语 |
| Keyword | Negative Solar Wind Dynamic Pressure Pulse Magnetosphere Vortex Field-aligned Current |
| Abstract | Using multipoint data from three Time History of Events and Macroscale Interactions during Substorms (THEMIS) satellites, we report a magnetospheric flow vortex driven by a negative solar wind dynamic pressure pulse. The observed vortex rotated in a direction opposite to that associated with positive solar wind dynamic pressure pulses. The vortex was moving tailward, as confirmed by a global magnetohydrodynamics (MHD) simulation. In addition, the equivalent ionospheric currents (EICs) deduced from ground magnetometer station data reveal that a current vortex in the ionosphere near the foot point of the satellites has a rotation sense consistent with that observed in the magnetosphere. The field-aligned current (FAC) density estimated from three THEMIS satellites is about 0.15nA/m(2), and the total FAC of the vortex is about 1.5-3x10(5)A, on the order of the total FAC in a pseudobreakup, but less than the total FAC in most moderate substorms, 10(6)A. Key Points |
| Indexed By | SCI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/5401 |
| Collection | 空间科学部 |
| Corresponding Author | Shi, QQ (reprint author), Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhao, HY,Shen, XC,Tang, BB,et al. Magnetospheric vortices and their global effect after a solar wind dynamic pressure decrease[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(2):1071-1077. |
| APA | Zhao, HY.,Shen, XC.,Tang, BB.,Tian, AM.,Shi, QQ.,...&Shi, QQ .(2016).Magnetospheric vortices and their global effect after a solar wind dynamic pressure decrease.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(2),1071-1077. |
| MLA | Zhao, HY,et al."Magnetospheric vortices and their global effect after a solar wind dynamic pressure decrease".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.2(2016):1071-1077. |
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| 201612121071-1077.pd（1200KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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