Interaction between the neutral wind in the ionosphere and the magnetosphere

电离层中性风与磁层之间的相互作用

• 批准号: 08454136
• 负责人: IYEMORI Toshihiko
• 金额: $ 4.61万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08454136/
• 关键词: ionosphere-magnetosphere coupling; neutral wind; field-aligned current; ionospheric dynamo; HF.radar; magnetosphere; ionosphere; magnetospheric current

(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.

(1)与等离子体组分相比，中性风具有更高的能量和动量密度，有望在内磁层中发挥重要作用。事实上，我们通过这项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。动力学探测器（DE） 1号的磁场观测结果得到了DE-2卫星数据的证实。(2)通过Shigaraki MU雷达与Freja卫星观测的联合研究，研究了电离层电场的不规则性。发现了行电离层扰动与中纬度电波动之间的密切联系。(3)利用Shigaraki MU rada等资料重新考察了IMF对电离层密度的控制作用，得到了一些新的结果，表明两者之间没有关系。(4)组装了用于高频雷达网数据分析的计算机系统，并安装了软件。(5)开发了一套分析任意给定时间和日期的等效电流系统的软件。

项目成果

Iyemori,T.: "Solar and IMF effects on mid-latitude ionospheric electric fields and foF2" J.Geomag.Geoelectr.48・10. 1219-1232 (1996)

Iyemori, T.：“太阳和IMF对中纬度电离层电场和foF2的影响”J.Geomag.Geolectr.48・10（1996）。

Iyemori,T.: "Solar and TMF effects on mid-latitude ionospheric electric fields and foF2" J.Geomag.Geoelectr.48・1. 1219-1232 (1996)

Iyemori, T.：“太阳和 TMF 对中纬度电离层电场和 foF2 的影响”J.Geomag.Geolectr.48・1 (1996)。

Saito, A.: "Conjugate observations of the mid-latitude electric field flactuations with the MU radar and Freja satellite" J.Atmosph.Terr.Phys.60. 129-140 (1998)

Saito, A.：“用 MU 雷达和 Freja 卫星对中纬度电场波动进行联合观测”J.Atmosph.Terr.Phys.60。

Iyemori,T.: "Time evolution of global equivalent current system associated with partial ring current (Extended Abstract)" Proc.NIPR Symp.Upper Atmos.Phys.(印刷中). (1998)

Iyemori, T.：“与部分环电流相关的全局等效电流系统的时间演化（扩展摘要）”Proc.NIPR Symp.Upper Atmos.Phys.（出版中）。

Nakabe, S.: "A statistical study of the magnetic field structure in the inner magnetosphere" J.Geophys.Res.102. 17571-17582 (1997)

Nakabe, S.：“内磁层磁场结构的统计研究”J.Geophys.Res.102。