Dynamics of Polar Ionosphere and Magnetosphere using SuperDARN HF Radar Network

使用 SuperDARN HF 雷达网络的极地电离层和磁层动力学

基本信息

批准号：
08454138
负责人：
SATO Natsuo
金额：
$ 4.29万
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 (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

项目摘要

The Dual Aur or al Radar Network (DARN) 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. Syowa East and South radars in Antarctica consist of this radar network. The HF radar Doppler information contained in the backscattered signals may be combined to yield maps of high-latitude plasma convection and the convection electric filed. The Super DARN network is particularly suited to studies of large-scale dynamical processes in the magnet osphere-ionosphere system, such as the evolution of the global configuration of the convection electric field under changing IMF conditions and the development and global extent of large-scale MHD waves in the magnetosphere-ionosphere cavity.Using Syowa and SuperDARN HF radar data following interesting characteristics were found ;(1) The region of the open-close field line in the nightside magnetosphere moves very high speed associated with auroral substorm through magnetic field reconnection processes.(2) The high speed plasma flow bursts are found in the dayside Polar Cusp region associated with the southward interpoanetary field.(3) Dynamics of global scale visible aurora are relating to the dynamic behavior of global scale plasma convection intensity and their patterns.(4) Movement and generation of plasma patches which are forming with high density and high temperature are closely relating to the direction and intensity of global scale plasma convection.(5) The direction and intensity of Electro-Jet Current in the equatorial region are relating to the enhancement of polar plasma convection.

双AUR或AL RADAR网络（DARN）是一个全球尺度网络，用于HF雷达，能够从高层间电离层的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Syowa East和South Radars由此雷达网络组成。反向散射信号中包含的HF雷达多普勒信息可以合并，以产生高纬度血浆对流的图和对流电气的图。 The Super DARN network is particularly suited to studies of large-scale dynamical processes in the magnet osphere-ionosphere system, such as the evolution of the global configuration of the convection electric field under changing IMF conditions and the development and global extent of large-scale MHD waves in the magnetosphere-ionosphere cavity.Using Syowa and SuperDARN HF radar data following interesting characteristics were found ;(1) The region of the open-close field line在夜间磁层中，磁层通过磁场重新连接过程非常高，与极光型相关。（2）高速血浆流动爆发在日期的极性极性尖端区域中发现与南方跨际场相关的区域。（3）全球尺度可见Aurora的动态，可见Aurora的动态与全球质量质量质量质量的动态相关（4. 4高密度和高温形成与全球尺度等离子体对流的方向和强度密切相关。（5）赤道区域中电流电流的方向和强度与极性等离子体对流的增强有关。