Small Scale Alfvénic Structure in the Aurora
Small Scale Alfvénic Structure in the Aurora
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DOI：
10.1023/a:1005207202143
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发表时间：
2000-11
影响因子：
10.3
通讯作者：
Krzysztof Stasiewicz;Paul Bellan;C. Chaston;Craig A. Kletzing;R. Lysak;J. Maggs;O. Pokhotelov
中科院分区：
文献类型：
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作者：
Krzysztof Stasiewicz;Paul Bellan;C. Chaston;Craig A. Kletzing;R. Lysak;J. Maggs;O. Pokhotelov
本文对空间和实验室等离子体中的色散阿尔文波进行了全面的回顾。我们从阿尔文波的线性特性开始，展示离子陀螺半径、平行电子惯性和有限频率效应如何改变阿尔文波特性。详细讨论了惯性和动能阿尔文波及其极化以及它们与漂移阿尔文波的关系。总结了从 Freja、Fast 和其他航天器的测量中推导出来的最新波观测和场参数。我们还提供了色散阿尔芬波的实验室测量结果，这是极光物理学最感兴趣的。还回顾了阿尔文波的电子加速以及色散阿尔文波与电离层磁层谐振器和全局场线谐振的可能联系。理论工作集中在阿尔文共振锥、色散阿尔文波的产生以及它们与背景等离子体的非线性相互作用和自相互作用的研究上。回顾了色散阿尔文波有质动力、密度空化、波调制/丝状结构和阿尔文波自聚焦等主题。非线性色散阿尔文波研究还包括涡旋的形成及其动力学以及阿尔文波湍流中的混沌。最后，我们对理论和实验研究进行了严格的评估，并指出了极光阿尔文波物理学的应用和未来前景。
This paper presents a comprehensive review of dispersive Alfvén waves in space and laboratory plasmas. We start with linear properties of Alfvén waves and show how the inclusion of ion gyroradius, parallel electron inertia, and finite frequency effects modify the Alfvén wave properties. Detailed discussions of inertial and kinetic Alfvén waves and their polarizations as well as their relations to drift Alfvén waves are presented. Up to date observations of waves and field parameters deduced from the measurements byFreja, Fast, and other spacecraft are summarized. We also present laboratory measurements of dispersive Alfvén waves, that are of most interest to auroral physics. Electron acceleration by Alfvén waves and possible connections of dispersive Alfvén waves with ionospheric-magnetospheric resonator and global field-line resonances are also reviewed. Theoretical efforts are directed on studies of Alfvén resonance cones, generation of dispersive Alfvén waves, as well their nonlinear interactions with the background plasma and self-interaction. Such topics as the dispersive Alfvén wave ponderomotive force, density cavitation, wave modulation/filamentation, and Alfvén wave self-focusing are reviewed. The nonlinear dispersive Alfvén wave studies also include the formation of vortices and their dynamics as well as chaos in Alfvén wave turbulence. Finally, we present a rigorous evaluation of theoretical and experimental investigations and point out applications and future perspectives of auroral Alfvén wave physics.