Interaction between the neutral wind in the ionosphere and the magnetosphere

(1)与等离子体相比，中性风的能量和动量密度较高，因此有望在磁层内层发挥重要作用。事实上，我们通过这次研究发现了一个新的大尺度电流系统，它应该是由电离层中的中性风产生的。动力学探索者1号(DE)-1的磁场观测结果得到了DE-2卫星观测数据的印证。(2)利用Shigaraki MU雷达和Freja卫星的联合观测研究了电离层电场的不规则性。(3)利用Shigaraki MU Rada等电离层数据，重新考察了IMF对电离层密度的控制，得到了一些新的结果，表明它们之间没有关系。(4)组装了高频雷达网数据分析的计算机系统，并安装了软件。(5)开发了任意给定时间和日期的等效电流系统分析软件。

(1)The neutral wind is expected to play important roles in the inner magnetosphere because of the higher energy and momentum densities comparing with the plasma components. In fact, we discovered through this study a new large scale current system which is supposed to be generated by the neutral wind in the ionosphere. The above result obtained by the Dynamics Explorer(DE)-1 magnetic field observation was confirmed by the data obtained by the DE-2 satellite.(2)The ionospheric electric field irregularities have been studied by a conjunction study between the Shigaraki MU radar and the Freja satellite observation. The close connection between the TID(Traveling Ionopheric Disturbance)and the mid-latitude electric fluctuation has been found.(3)The IMF control on the ionospheric density has been re-examinedby using the Shigaraki MU rada data etc..Some new results which indicate the no relation between them are obtained.(4)A computer system for HF radar network data analysis is assembled and the software is installed.(5)A software to analyze the equivalent current system at any given time and date was developed.