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| 1 | Observations of kinetic Alfvén waves by THEMIS near a substorm onset显示文摘Low frequency electromagnetic fluctuations in the vicinity of a magnetospheric substorm onset were investigated using simultaneous observations by THEMIS multiple probes in the near-Earth plasma sheet in the magnetotail.The observations indicate that in the vicinity of a substorm onset,kinetic Alfvén waves can be excited in the high-βplasma sheet(β=2μ0nT/B 2 ,the ratio of plasma thermal pressure to magnetic pressure)within the near-Earth magnetotail.The kinetic Alfvén wave has a small spatial scale in the high-βplasma.The parallel electric field accompanying kinetic Alfvén waves accelerates the charged particles along the magnetic field.The kinetic Alfvén waves play an important role in the substorm trigger process,and possibly in the formation of a substorm current wedge. | DUAN SuPing LIU ZhenXing ANGELOPOULOS Vassilis | 2012 | Chinese Science Bulletin2012，57，12： | 3 |
| 2 | 近地等离子体片中磁场扰动和离子速度扰动的统计研究显示文摘利用THEMIS THC卫星观测数据统计分析近地等离子体片中磁场扰动和等离子体整体流的速度扰动的关系,研究Alfven波动的活动性.研究结果表明:1)等离子体整体流的速度扰动幅度依赖于平均速度的大小,速度扰动幅度随平均速度的增加而增加;2)速度扰动幅度与磁场扰动幅度存在较强的正相关性;3)磁场扰动幅度与AE指数密切相关,磁场扰动幅度随着AE指数增加而增加,而速度扰动幅度与AE指数之间没有明显的相关性;4)Alfven比与AE指数的相关系数较小,但能够看出Alfven比随着AE指数增加而减小的趋势;5)速度扰动幅度和磁场扰动幅度与尾向距离及距中性片距离的关系不明显. | 朱瑾 杜爱民 曹馨 Tielong Zhang 徐文耀 | 2013 | 地球物理学进展2013，28，3： | 1 |
| 3 | Recent Progresses of Magnetospheric Physics in China:2010—2011显示文摘In the past two years,many progresses are made in magnetospheric physics by using either the data of Double Star Program,Cluster and THEMIS missions,or by computer simulations. This paper briefly reviews these works based on papers selected from the 80 publications from April 2010 to April 2011.The subjects covered various sub-branches of magnetospheric physics,including geomagnetic storm,magnetospheric substorm,etc. | CAO Jinbin LIU Zhenxing PU Zuyin | 2012 | 空间科学学报2012，32，5： | 0 |
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