Structure, phase motion, and heating within Alfvén resonances
Structure, phase motion, and heating within Alfvén resonances
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阿尔文共振中的结构、相运动和加热
DOI：
10.1029/96ja01141
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发表时间：
1996
影响因子：
--
通讯作者：
W. Allan
中科院分区：
文献类型：
--
作者：
A. Wright;W. Allan
对阿尔文共振进行了分析研究，针对能量通过 (1) 等离子体体内的电阻率 (η) 和 (2) 电离层边界内的有限 Pedersen 电导率 (Σ p ) 耗散的情况。比较了两种解决方案的通用函数，我们发现谐振场的结构和相运动对耗散细节相当不敏感。我们还发现了共振的一个奇怪的特性：无论我们考虑哪种耗散过程，空间积分（但不是时间平均）耗散率都与时间无关。共振似乎具有非常坚固的结构。
An analytical investigation of Alfven resonances is presented for the cases when energy is dissipated by (1) resistivity (η) within the body of the plasma, and (2) finite Pedersen conductivity (Σ p ) within the ionospheric boundaries. Universal functions for both solutions are compared, and we find that the structure and phase motion of the resonant fields is fairly insensitive to the details of dissipation. We also identify a curious property of resonances : the spatially integrated (but not time-averaged) dissipation rate is independent of time for whichever dissipation process we consider. It appears that resonances have a remarkably robust structure.