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The magnetosphere under the radial interplanetary magnetic field: A numerical study
文献类型：期刊论文
| 作者 | Tang, B. B.; Wang, C.; Li, W. Y. |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 118期号:12页码:7674-7682 |
| ISSN号 | 2169-9402 |
| 关键词 | magnetosphere state radial IMF global MHD simulation |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | We investigate the magnetosphere under radial interplanetary magnetic fields (IMF) by using global magnetohydrodynamic simulations. The magnetosphere-ionosphere system falls into an unexpected state under this specific IMF orientation when the solar wind electric field vanishes. The most important features that characterize this state include (1) magnetic reconnections can still occur, which take place at the equatorward of the cusp in one hemisphere, the tailward of the cusp in the other hemisphere, and also in the plasma sheet; (2) significant north-south asymmetry exists in both magnetosphere and ionosphere; (3) the polar ionosphere mainly presents a weak two-cell convection pattern, with the polar cap potential valued at ∼30 kV; (4) the whole magnetosphere-ionosphere system stays in a very quiet state, and the AL index does not exceed −70 nT; and (5) the Kelvin-Helmholtz instability can still be excited at both flanks of the magnetosphere. These results imply the controlling role of the IMF direction between the solar wind and magnetosphere interactions and improve our understanding of the solar wind-magnetosphere-ionosphere system. |
| 英文摘要 | We investigate the magnetosphere under radial interplanetary magnetic fields (IMF) by using global magnetohydrodynamic simulations. The magnetosphere-ionosphere system falls into an unexpected state under this specific IMF orientation when the solar wind electric field vanishes. The most important features that characterize this state include (1) magnetic reconnections can still occur, which take place at the equatorward of the cusp in one hemisphere, the tailward of the cusp in the other hemisphere, and also in the plasma sheet; (2) significant north-south asymmetry exists in both magnetosphere and ionosphere; (3) the polar ionosphere mainly presents a weak two-cell convection pattern, with the polar cap potential valued at approximate to 30 kV; (4) the whole magnetosphere-ionosphere system stays in a very quiet state, and the AL index does not exceed -70 nT; and (5) the Kelvin-Helmholtz instability can still be excited at both flanks of the magnetosphere. These results imply the controlling role of the IMF direction between the solar wind and magnetosphere interactions and improve our understanding of the solar wind-magnetosphere-ionosphere system. |
| 学科主题 | 空间物理 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR-WIND ; HILL MODEL ; MAGNETOPAUSE ; SIMULATIONS ; RECONNECTION ; GAS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000329508900022 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1528]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 作者单位 | Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, B. B.,Wang, C.,Li, W. Y.. The magnetosphere under the radial interplanetary magnetic field: A numerical study[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2013,118(12):7674-7682. |
| APA | Tang, B. B.,Wang, C.,&Li, W. Y..(2013).The magnetosphere under the radial interplanetary magnetic field: A numerical study.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,118(12),7674-7682. |
| MLA | Tang, B. B.,et al."The magnetosphere under the radial interplanetary magnetic field: A numerical study".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 118.12(2013):7674-7682. |
入库方式： OAI收割
来源：国家空间科学中心
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