对称型波包发展与重力惯性波波包发展的相似性问题

THE SIMILARITY OF THE DEVELOPMENT OF SYMMETRIC WAVEPACKET AND INERTIA-GRAVITATIONAL WAVEPACKET

中文摘要:

      利用波群分析方法讨论波包发展被用于大气中波动稳定性分析,得到了比normal mode方法更好的结果。曾庆存^[1]等阐述了Rossby波和涡旋运动的稳定性与一些参数间的关系,巢纪平^[2],刘式适^[3]等讨论了重力惯性内波的波作用量与稳定性,孙立潭^[4]等讨论了中尺度对称型重力惯性波的波包发展问题,均说明了这一点。

英文摘要:

      By using the WKB method, the similar and different conditions of the development of symmetric wavepacket and inertia-gravitational wavepacket in the moment nondivergent mouel arc discussed. The development symmetric wavepacket depended not only on the external parametric nonstationary but also on the thermal wind deviations mainly. If thermal wind balance was zssumed, a conservation quantity ωE was obtained, but it was not so about the inertia-gravitational wave. If the vertical coordinate axis was rotated to the direction in whirl: the develepment of smmetric perturbation was maximum, the condition of the development of symmetric wavepachet was similar to that of inertia-gravitational wavepaket.