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电离层ULF Alfvén谐振的空间测量
引用本文:赵正予,刘向红,张浩,周向春.电离层ULF Alfvén谐振的空间测量[J].武汉大学学报(理学版),2000,46(1).
作者姓名:赵正予  刘向红  张浩  周向春
作者单位:武汉大学电子信息学学院,武汉,430072
基金项目:国家自然科学基金!(4SS04010)
摘    要:利用AUREOL-3卫星对空间ULF/ELF电场、磁场分量以及电子密度同步测量数据,通过对数据的高分辨率谱分析,首次得到电离层Alfvén谐振器的谐振谱结构的空间直接测量结果.本文结果表明:对于近似垂直与地磁场方向的电场扰动分量,其一阶本征谐振频率为 7.8 Hz,二阶谐振频率为 14 Hz,且存在 SRS谱谐振结构.但对于磁场分量,仅在南北分量和垂直分量上发生谐振,而对水平东西方向的分量,在同一测量时间段内没有发生Alfvén谐振现象.

关 键 词:电离层  Alfvén谐振  空间测量

Spatial Measurement on the Evidence of Ionospheric Alfven Resonator
ZHAO Zheng-yu,LIU Xiang-hong,ZHANG Hao,ZHOU Xiang-chun.Spatial Measurement on the Evidence of Ionospheric Alfven Resonator[J].JOurnal of Wuhan University:Natural Science Edition,2000,46(1).
Authors:ZHAO Zheng-yu  LIU Xiang-hong  ZHANG Hao  ZHOU Xiang-chun
Abstract:Using the data of ULF/ELF electric and magnetic wave field measured on board AUREOL3 satellite, by the high resolution spectral analyses, one obtained for the first time the spatial measurement on the evidence of ionospheric alfven resonator. The result of the measurement indicates that there are 7. 8 Hz for fundamental frequency, 14 Hz for second resonant frequency in the electric field component, and also the spectral resonance structure, but not in the magnetic vertical component for the magnetic field components.
Keywords:ionosphere  Alfven resonance  spatial measurement
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