The regularity of the change of the unstableoscillation wave form and the structure of the power spectrum were analysed.
计算并绘出了非稳区域边界，分析了非稳振荡波形变化规律及其模结构。
2
The following conclusions are obtained: 1. the density wave in an unstable area develops a finite continuous oscillation.
得到如下一些重要结论：1。不稳定区域密度波振荡为有限的持续振荡。
3
Results show that the quasi biennial (QB) oscillation is the most unstable mode of the linear coupled air sea system and only the QB mode displays ENSO-like horizontal structure.