两层正压涡旋稳定性问题分析  

THE STABILITY ANALYSIS OF THE SPIRAL WAVE IN VORTEX OF TWO-LAYER BAROTROPIC FLUID

作　　者：赵艳玲[1] 梁丹青[1] 张铭[1] 

机构地区：[1]解放军理工大学气象学院大气环流与短期气候预测实验室,南京211101

出　　处：《气象科学》2004年第4期480-482,共3页Journal of the Meteorological Sciences

基　　金：国家自然科学基金项目 (编号 :4 0 175 0 14 );上海科协基金项目 (编号 :0 2DJ14 0 32 )共同资助

摘　　要：本文从柱坐标中线性化的两层均质流体的正压原始方程组出发 ,从广义能量的角度 ,研究了该模型中涡旋波的稳定性问题 ,发现此时不仅可存在广义正压不稳定和超高速不稳定 ,当上下层扰动厚度场反相时还有新的不稳定类型发生。In this paper,from the view of the generalized energy,the stability of the spiral wave is studied on the basis of the linear two-layer barotropic primitive equation model in the cylindrical coordinates.In this situation,in addition to the generalized barotropic instability and the super high-speed instability,there are some other instabilities when the two-layer disturbance fields of thickness are out-of-phase.

关 键 词：稳定性 两层正压涡旋 广义能量 

分 类 号：P461.2[天文地球—大气科学及气象学]