| 冬季平流层波动模型的分岔特性 |
| |
| 引用本文： | 胡雄,张训械.冬季平流层波动模型的分岔特性[J].地球物理学报,1995,38(4):428-438. |
| |
| 作者姓名： | 胡雄 张训械 |
| |
| 作者单位： | 中国科学院武汉物理研究所, 武汉 430071 |
| |
| 摘 要： | 从描述波流相互作用的Ｈｏｌｔｏｎ－Ｄｕｎｋｅｒｔｏｎ简称Ｈ－Ｄ)模型出发，应用延拓方法求解常微分方程的分岔问题，研究冬季平流层波动模型的分岔特性．给出了大气行星波２与流相互作用的底部边界强迫波、底部边界平均纬向风场、风切变等参数的分岔特性，同时给出了波１与流相互作用的底部边界强迫波的分岔特性的结果．
|
| 关 键 词： | 波流相互作用 H－D模型 延拓方法 分岔特性 |
| 收稿时间： | 1994-05-11 |
BIFURCATION PROPERTIES OF A STRATOSPHERIC VACILLATION MODEL |
| |
| HU XIONG,ZHANG XUN-XIE,HUANG XIN-YU.BIFURCATION PROPERTIES OF A STRATOSPHERIC VACILLATION MODEL[J].Chinese Journal of Geophysics,1995,38(4):428-438. |
| |
| Authors: | HU XIONG ZHANG XUN-XIE HUANG XIN-YU |
| |
| Institution: | Wuhan Institute of Physics, Academia Sinica, Wuhan 430071 |
| |
| Abstract: | Bifurcation properties of a stratospheric vacillation model, the HD model which describes the wave-zonal flow interactions in a β-channel under a nonconservative constraint with zonal-flow forcing and wave dissipation, are investigated numerically The forcing wave, or the intensity of zonal wind at the bottom boundary, or the shear of zonal wind is changed as a parameter. The steady solution branches are obtained by using the pseudo-arclength continuation method and the linear stabilityof a steady solution is analyzed by calculating the eigenvalues of the linearized system. The bifurcation diagrams of planetary wave 2-flow interactions for three parameters described above and planetary wave 1-flow interactions for parameter forcing wade are presented. The results show that multi-equilibria exist in the stratosphere during winter and may be an explanation to the interannual variabilities of the winter stratosphere. |
| |
| Keywords: | Bifurcation properties Wave-flow interactions H-D model Pseudo-arclength continuation method |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
