The Rayleigh‐Taylor instability is not damped by recombination in the F region
The Rayleigh‐Taylor instability is not damped by recombination in the F region
复制标题
瑞利-泰勒不稳定性不会因 F 区域的重组而减弱
DOI：
10.1029/96ja02527
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发表时间：
1996
影响因子：
--
通讯作者：
S. Zalesak
中科院分区：
文献类型：
--
作者：
J. Huba;P. Bernhardt;S. Ossakow;S. Zalesak
碰撞瑞利 - 泰勒不稳定性在解释赤道扩展F的产生和发展中起着至关重要的作用。针对包含复合阻尼的F区，已经开展了许多关于该不稳定性的线性和非线性分析。有人认为，复合会抑制不稳定的密度扰动，并提供一种通过模式耦合来抑制不稳定性产生或使不稳定性饱和的机制。我们表明，实际上F区复合相对于背景电离层并不会抑制不稳定的密度扰动。复合以速率VR降低总电子密度，包括环境背景和扰动。
The collisional Rayleigh-Taylor instability plays a crucial role in explaining the onset and development of equatorial spread F. A number of linear and nonlinear analyses of the instability have been developed for the F region that include recombinative damping. It has been argued that recombination damps the unstable density perturbations and provides a mechanism to suppress the onset of instability or saturate the instability via mode coupling. We show that F region recombination, in fact, does not damp unstable density perturbations relative to the background ionosphere. Recombination acts to reduce the total electron density, both the ambient background and the perturbation, at a rate VR.