电离层ULF Alfvén谐振的空间测量

电离层ULF Alfvén谐振的空间测量 Spatial Measurement on the Evidence of Ionospheric Alfven Resonator 赵正予 1 first-author 刘向红 1 张浩 1 周向春 1 武汉大学电子信息学学院,武汉,430072 武汉大学电子信息学学院,武汉,430072 College of Electronic Information, Wuhan University College of Electronic Information, Wuhan University 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． 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. 电离层 Alfvén谐振 空间测量 ionosphere Alfven resonance spatial measurement 10.14188/j.1671-8836.2000.01.025 TN011 国家自然科学基金!（4SS04010） 2000-01-01 2021-04-01 1