A form of potential vorticity equation for depth-integrated flow with a free surface

被引：9
|
作者：
Hughes, Chris W. [1 ]
机构：
[1] Proudman Oceanog Lab, Liverpool L3 5DA, Merseyside, England
来源：
JOURNAL OF PHYSICAL OCEANOGRAPHY | 2008年 / 38卷 / 05期
基金：
英国自然环境研究理事会;
关键词：
D O I：
10.1175/2007JPO3809.1
中图分类号：
P7 [海洋学];
学科分类号：
0707 ;
摘要：
A form of linear, barotropic potential vorticity equation is derived for an ocean with a free surface, in which only one scalar variable appears (ocean bottom pressure, or subsurface pressure). Unlike quasigeostrophic or rigid-lid derivations, the only approximation made (apart from linearization) is that changes in the circulation must be slow compared with the inertial frequency. Effects of stratification are included, but only parametrically in the sense that density is treated as a given quantity or forcing term rather than a variable.
引用
收藏
页码：1131 / 1136
页数：6
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