摘要
半地转适应和半地转发展是热带大气和海洋运动的两种基本形态，它们在时间上是可分的，反映了不同的物理过程。当初始扰动作用于大气或海洋时，首先将激发出重力惯性波，当重力惯性波频散后，建立起半地转的平衡状态，此后运动进入到以Rossby波（长波或短波）、Kelvin波和混合波中的Rossby短波为主导的发展状态。文中研究的纬圈半地转适应和发展运动，是Gill长波近似模式的理论基础。同时研究了经圈半地转适应和发展运动，实际上这相当于短波近似模式，它可以应用到研究海洋经圈边界附近的一类问题。
It is indicated that the semi-geostrophic adaptation motion and evolution motion are the two kinds of basic motion in tropics. They are separable in time and are the results of different physical processes in different phase of motion. After the gravity-inertia wave dispersion which is excited by initial disturbance, the semi-geostrophic quasi-balance state is established. In this stage, the motions are controlled by the Rossby wave (short or long wave length), and the Kelvin wave. The studies of zonal semi-geotrophic processes(long wave approximation ) are the foundation of Gill model.Besides, in this paper the meridional semi-geostrophic processes (short wave approximation )are also investigated for the studies of some kinds of motions near the meritional boundary of ocean.
出处
《气象学报》
CSCD
北大核心
2000年第3期259-264,共6页
Acta Meteorologica Sinica
基金
国家自然科学基金!49775260
