| EISCAT雷达观测到的极区电离层等离子体反常对流 |
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| 引用本文： | 马淑英, 刘鹏, 刘会欣, K.Schlegel, 徐继生. EISCAT雷达观测到的极区电离层等离子体反常对流[J]. 地球物理学报, 2001, 44(04): 446-453,581, |
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| 作者姓名： | 马淑英 刘鹏 刘会欣 K.Schlegel 徐继生 |
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| 作者单位： | 1. 武汉大学物理与电子信息科学学院!武汉430072; 2. Max- Planck Inst itut f??r Aeronomie, D- 37189 Katl enburg- Lindau, Germany; 3. 中国科学院武汉物理与数学研究所, 电离层观象台, 武汉?? 430071 |
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| 摘 要： | 综合分析EISCAT雷达与卫星当地测量数据,并利用磁层磁场模式对磁力线进行追踪,研究了发生在极光椭圆朝极盖边界附近电离层中,一例反常的背离太阳流动的强等离子体对流事件,及相关的太阳风-磁层-电离层耦合过程.结果表明,磁暴期间IMFBz指向南时观测到这一反常高速对流,及其相应的等离子体性态特征,很可能是向阳侧磁层顶磁重联过程在电离层中的印记.
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| 关 键 词： | 极区电离层 等离子体对流 粒子沉降 磁场重联 太阳风-磁层-电离层耦合 |
| 收稿时间： | 2000-07-04 |
| 修稿时间： | 2001-03-12 |
A REVERSED PLASMA CONVECTION FLOW IN THE POLAR IONOSPHERE OBSERVED WITH EISCAT RADAR |
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| MA SHU YING, LIU PENG, LIU HUI XIN, K.SCHLEGEL, XU JI SHENG. A REVERSED PLASMA CONVECTION FLOW IN THE POLAR IONOSPHERE OBSERVED WITH EISCAT RADAR[J]. Chinese Journal of Geophysics (in Chinese), 2001, 44(04): 446-453,581, |
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| Authors: | MA SHU YING LIU PENG LIU HUI XIN K.SCHLEGEL XU JI SHENG |
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| Affiliation: | 1. Dep t of Sp ace Physics, Wuhan Univ ersi ty, Wuhan 430072, China; 2. Max??Planck Insti tut f ??r Aeronomie , D??37189 Katlenburg??L indau , Germany; 3. Wuhan Ionospheri c Obser vatory, Wuhan I nst itute of Physi cs and Mathemat ics, the Chinese Acad emy of Sciences, Wuhan 430071, China |
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| Abstract: | An abnormal anti sunward intense flow of plasma convection is observed by EISCAT radar in the high latitude ionosphere near the polar cap boundary. It occurred at morning sector of MLT under conditions of southward IMF B z during the recovery phase of a moderate magnetic storm. A synthetic analysis of radar data and in situ satellite observations is made in combination with a tracing of magnetic field lines by means of magnetospheric field model on this event. It is evidently indicated that the abnormal reversed westward flow of plasma convection and the features of the plasma structure and property are probably the ionospheric signatures of magnetic reconnection taking place at the dayside magnetopause. |
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| Keywords: | Polar ionosphere Plasma convection Particle precipitation Magnetic reconnection Solar wind magnetosphere ionosphere coupling |
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