大功率高频电波加热电离层的非线性物理过程  

Nonlinear processes in ionosphere: Report on the mechanisms of ionospheric heating by the powerful radio waves

作　　者：周晨[1] 王翔[1] 刘默然 倪彬彬[1] 赵正予[1] ZHOU Chen;WANG Xiang;LIU MoRan;NI BinBin;ZHAO ZhengYu(Department of Space Physics,School of Electronic Information,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电子信息学院空间物理系,武汉430072

出　　处：《地球物理学报》2018年第11期4323-4336,共14页Chinese Journal of Geophysics

基　　金：国家自然科学基金面上项目(41574146;41774162;41704155);国家高技术研究发展计划项目和军委科技委前沿科技创新项目资助

摘　　要：地基大功率电波加热电离层是通过地基大功率短波发射机向电离层发射无线电波,通过波-粒和波-波的相互作用将无线电波的能量注入电离层.通过这种有目的可操控的方式改变电离层电子密度和温度的分布,可以深入研究电离层中等离子体能量和物质的非线性演化过程,特别是电离层电子的非平衡态分布和加速问题.本文通过对电离层加热中几个比较重要物理过程的评述,对过去20年来我国研究学者在这一研究方向上取得的重要进展进行了介绍.Ionospheric heating by powerful radio wave is realized through radio wave injection into ionosphere by ground-based shortwave transmitter emission.Energy of radio wave can be transferred into ionospheric plasma through wave-particle and wave-wave interaction.By utilizing this object-oriented and manipulative operation,ionospheric electron density and temperature can be artificially changed.The most important physical processes includes the nonlinear evolution of ionospheric plasma,electron non-equilibrium distribution,electron acceleration,etc.In this paper,we present the principal process of ionospheric heating and introduce the recent research progress achieved by Chinese scholars.

关 键 词：大功率高频电波 非线性过程 电离层加热 欧姆加热 自聚焦不稳定性 参量不稳定性 朗缪尔湍流 

分 类 号：P352[天文地球—空间物理学]