摘要
本文首先建立了中尺度对称运动的Hamihon函数,并用变分原理导出了对称运动稳定的充分条件,然后再用Lagrange变分导出了缓变介质中对称运动的波作用量方程,这种波作用量方程与用WKB方法所得到的结果是相同的。同时,本文进一步讨论了中尺度对称扰动渡包的演变规律,并获得了对称运动发展的判据。
In this paper,the Hamiltonian function of meso-scale symmetric motion is constructed.and the sufficient conditions of symmetric motion is derived with the application of variational principle. Furthermore,the wave action equation of symmetric motion in the slowly varing media is obtained by using Lagrange mean variation, which is consistent with that obtained by the WKB method. On the other hand,the evolution of meso-scale symmetric motion wave -packt is discussed in detail and some results are obtained too.
出处
《成都信息工程学院学报》
1992年第4期51-59,共9页
Journal of Chengdu University of Information Technology
