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对2001～2003年间Cluster星簇穿越极尖区期间观测到的电离层起源的离子(O+离子,He+离子和H+离子)特性进行了统计分析,主要研究了这些离子的数密度与地磁活动以及太阳风动压之间的关系.结果表明:O+离子数密度和地磁活动指数Kp之间存在着正相关关系,He+离子数密度和地磁活动指数Kp不相关,O+离子和He+离子数密度都和太阳风动压之间存在着显著的正相关关系;H+离子数密度与太阳风动压之间存在着正相关关系,而和地磁活动指数Kp不相关.最后,对这些离子的特性与太阳风动压及地磁活动之间的关系进行了讨论.
The statistical analysis of the ions (O + ions, He + ions and H + ions) characteristics of ionospheric origin observed during the cluster constellation crossing the polar region between 2001 and 2003 mainly studied the numerical density and geomagnetic activity of these ions and the solar wind The results show that there is a positive correlation between the number density of O + ions and the geomagnetic activity index Kp, the number density of He + ions is not related to the geomagnetic activity index Kp, and both the numbers of O + and He + There is a significant positive correlation between the pressure and the number density of H + ions and the solar wind pressure, but not related to the geomagnetic activity index Kp.Finally, the characteristics of these ions and the solar wind pressure and geomagnetic activity The relationship between the discussion.