| 中高层大气行星波与惯性重力内波的非线性相互作用 |
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| 引用本文： | 熊建刚,易帆.中高层大气行星波与惯性重力内波的非线性相互作用[J].空间科学学报,2000,20(2):121-128. |
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| 作者姓名： | 熊建刚 易帆 |
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| 作者单位： | 1. 中国科学院武汉物理与数学研究所430071
2. 中国科学院武汉物理与数学研究所430071;武汉大学无线电科学技术系 |
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| 基金项目： | 国家自然科学基金资助课题
49674240 |
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| 摘 要： | 在弱非线性理论基础上，将三维大气中行星波和惯性重力波朋原始非弹性近似方程中分离出来，讨论了典型的２天行星波与惯性重力内波的非线笥相互作用过程。人振曲面和参量不稳定增长率来看，行星波倾向于空间尺度较大的惯性重力波发生相互作用。利用潮汐波的等价重力波假设，讨论了２天行星波与半日潮及９．６ｈ惯性重力波的相互作用，三波相互作用时能量恒。非线性相互作用使２天波和潮汐波的波幅受到长期调制。
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| 关 键 词： | 行星波 潮汐 惯性重力波 非线性作用 中高层大气 |
| 修稿时间： | 1999年6月16日 |
NONLINEAR INTERACTION AMONG PLANETARY WAVE AND INERTIALGRAVITY WAVES IN THE MIDDLE AND UPPER ATMOSPHERE |
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| XIONG Jiangang.NONLINEAR INTERACTION AMONG PLANETARY WAVE AND INERTIALGRAVITY WAVES IN THE MIDDLE AND UPPER ATMOSPHERE[J].Chinese Journal of Space Science,2000,20(2):121-128. |
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| Authors: | XIONG Jiangang |
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| Abstract: | The evolution equation of planetary wave and inertial-gravity waves are ob-tained from the anelastic equations based on a weakly nonlinear assumption. nomthe resonance surface and increase rate curve, it is found that the planetary waveprefers to interact with large scale inertial-gravity waves. By using the equivalentgravity wave assumption of tidal wavest the interaction among the typical 2 daysplanetary wave, semidiurnal tide and 9.6 hours inertial-gravity waves are investi-gated in detail. The exchange of energy between planetary wave and semidiurnaltide is found to proceed more strongly than the exchange between them and the9.6 hours inertial-gravity gravity. The variability of tidal and planetary wave am-plitudes may be caused by nonlinear interaction between them- |
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| Keywords: | Nonlinear interaction Planetary wave Tide Inertial-gravity wave |
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