Interhemispheric conjugate studies on polar electromagnetic dynamics using SuperDARN HF radars

使用 SuperDARN HF 雷达进行极地电磁动力学的半球共轭研究

基本信息

批准号：
11304029
负责人：
SATO Natuo
金额：
$ 17.65万
依托单位：
National Institute of Polar Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11304029/
关键词：
SuperDARN HF radar aurora plasma convection polar region ionosphere geomagnetic conjugacy polar mesosphere summer echo (PMSE)極域電磁圏擾乱太陽風地磁気脈動地磁気共役点電磁圏 Super DARNレーダー

项目摘要

The Super Dual Auroral Radar Network (SuperDARN) is a global-scale network for HF radars capable of sensing backscatter from ionospheric irregularities in the E and F-regions of the high-latitude ionosphere. Such HF radar network has been deployed in Arctic and Antarctic regions. SENSU Syowa East and South radars in Antarctica consist of this radar network. The HF radar Doppler velocity information contained in the backscattered signals has combined to yield maps of high-latitude plasma convection and the convection electric filed. Using the SuperDARN network data we studied various large-scale and meso-scale phenomena/dynamics observed in the polar ionosphere, which occur by the processes of the magnetosphere-ionosphere coupling, and produced following results;1) Polar mesospheric summer echo (PMSE) phenomena has been firstly detected in Antarctic region using the near range echo obtained by the SUNSE Syowa radars, 2) Finding new evidences that there are two different physical modes f … More or the responses of ionosphere in association with the interplanetary magnetic field changes, 3) Finding evidences that plasma flow burst events occur in wider longitudinal region (extending more than 5 MLT) in the dayside polar cusp region, 4) A new method to deduce two dimensional field-aligned current using the Super DARN Doppler velocity data, 5) Generation and propagation characteristics/mechanism of Pc 3-5 magnetic pulsations by conducting the simultaneous observations of Geotail satellite/EIACAT heater/Super DARN, 6) Localized and non-conjugate phenomena of Pc 3 -4 magnetic pulsation obtained by SENSE Syowa radars and CUTLASS radars, 7) Interhemispheric conjugacy of the spectral width boundary and their relation to the electromagnetic field variations obtained onboard satellite, 8) A new mode of TMS (time series) has been developed using original signals. This mode has been applied to the meteor echoes and found that the velocity of the neutral wind in the mesosphere detected by this method was consistent with that detected by MF radar.These scientific results have been presented in the international workshops/meetings and also published to International scientific journals. Less

超级双极雷达网络（SuperDarn）是一个全球尺度网络，用于HF雷达，能够从高纬度电离层的E和F区域中从电离层不规则地进行反向散射。这种HF雷达网络已部署在北极和南极地区。南极洲的Sensu Syowa东部和南部雷达由这个雷达网络组成。反向散射信号中包含的HF雷达多普勒速度信息共同产生了高纬度等离子体结构的图和构造电气。使用SuperDarn网络数据，我们研究了在极性离子层中观察到的各种大尺度和中尺度现象/动力学，这是通过磁层离子层耦合的过程发生的，并在结果之后产生; 1）使用Antarce range 2在Sunse中发现了近距离的夏季ECHO（PMSE），从而产生了差异; 1） new evidences that there are two different physical modes f … More or the responses of ionosphere in association with the interplanetary magnetic field changes, 3) Finding evidences that plasma flow burst events occur in wide longitudinal region (extending more than 5 MLT) in the dayside polar cusp region, 4) A new method to deduce two dimensional field-aligned current using the Super DARN Doppler velocity data, 5) Generation and propagation PC 3-5磁性脉动的特性/机制通过进行晶状尾卫星/eiacat加热器/超级darn的简单观察，6）PC 3 -4的局部和非偶联现象，通过感觉Syowa雷达和Cutlass Radars和Cutlass Radars和Cutlass Radars，7）在exjuge groptiration上的磁脉冲，7）及其在层间范围内的相关性及其相关性的范围，这些频率及其相关范围的范围范围的范围是范围的。卫星，8）使用原始信号开发了一种新的TMS（时间序列）。这种模式已应用于流星回声，发现该方法检测到的中性风的速度与MF雷达检测到的中性风相一致。这些科学结果已在国际研讨会/会议上提出，并发布给国际科学期刊。较少的