摘要
在正压流体中,从含有完整Coriolis力的准地转位涡方程出发,采用摄动方法与时空伸长变换,推导了在缓变地形作用下的Rossby孤立波振幅满足非齐次BDO方程.通过分析,说明β效应、地形效应是诱导Rossby波产生的重要因素,也指出了Coriolis力的水平分量和地形随时间的变化会对Rossby波的演变产生影响.
In the barotropic fluid,based on the geostrophic vorticity equation with complete Coriolis force,the amplitude of the Rossby wave in the slowly changing topography satisfies the nonhomogeneous BDO equation was deduced by using the perturbation method and the time and space variable.The results show that the Beta effect and the topographic effect are important factors to induce the Rossby wave.At the same time,the horizontal component of the Coriolis force and the changes of topography with time have a certain influence on the Rossby wave.
作者
贾静
杨红丽
杨光兴
杨联贵
JIA Jing;YANG Hong-li;YANG Guang-xing;YANG Lian-gui(School of Mathematical Sciences,Inner Mongolia University,Hohhot 010021,China;People's Bank of China,Hohhot Central Sub Branch,Hohhot 010020,China)
出处
《内蒙古大学学报（自然科学版）》
CAS
北大核心
2019年第1期44-49,共6页
Journal of Inner Mongolia University：Natural Science Edition
基金
国家自然科学基金资助项目(11362012)
关键词
ROSSBY波
BDO方程
水平分量
缓变地形
Rossby wave
BDO equation
horizontal component
slowly changing topography
