| 大气重力波与电子密度扰动的耦合 |
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| 引用本文： | 涂剑南. 大气重力波与电子密度扰动的耦合[J]. 空间科学学报, 1993, 13(3): 190-195. doi: 10.11728/cjss1993.03.190 |
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| 作者姓名： | 涂剑南 |
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| 作者单位： | 武汉大学空间物理系, 430072 |
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| 摘 要： | 本文从相互耦合的大气流体方程和双流体等离子体方程出发, 导出了赤道F区大气重力波和电子密度扰动的耦合色散关系, 据此对两者的共振相互作用作了进一步的理论分析。结果表明, 大气重力波可以通过共振耦合将部分能量转换给带电粒子, 为赤道扩展F提供初始电子密度扰动;在这过程中, 等离子体不稳定性对共振条件和共振耦合有着重要的影响。
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| 关 键 词： | 大气重力波 电子密度扰动 共振耦合 |
| 收稿时间： | 1991-12-23 |
| 修稿时间： | 1900-01-01 |
THE COUPLING BETWEEN ATMOSPHERIC WAVES AND ELECTRON DENSITY PERTURBATIONS |
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| Tu Jian-nan. THE COUPLING BETWEEN ATMOSPHERIC WAVES AND ELECTRON DENSITY PERTURBATIONS[J]. Chinese Journal of Space Science, 1993, 13(3): 190-195. doi: 10.11728/cjss1993.03.190 |
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| Authors: | Tu Jian-nan |
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| Affiliation: | Department of Space Physics, Wuhan University, 430072 |
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| Abstract: | From the atmospheric fluid equations and two-fluid equations of ionospheric plasmas coupled with each other, the coupling dispersion relation of atmospheric gravity waves and electron density perturbations in equatorial F region is derived and the resonant interaction between these two modes in different mediums is analyzed theoretically. The discussion shows that the gravity wave can transfer part of its energy to charged particles by resonance coupling mechanism and then induce initial electron density disrnrbanc for equatorial spead F. In the process, the resonance condition and resonance coupling are significantly influenced by plasma instabilities. |
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| Keywords: | Atmospheric gravity wave Electron density perturbation Resonance coup-ling |
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