Frictional effects in wind-driven ocean currents

Frictional effects in wind-driven ocean currents
复制标题

风驱动洋流中的摩擦效应

DOI:
--
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
A. Constantin
A. Constantin
中科院分区:
--
文献类型:
--
作者:
A. Constantin

文献摘要

参考文献

被引文献

相似文献

表层洋流对气候有重大影响,其动态在很大程度上取决于垂直涡动粘性的行为。我们提出了一个分析研究的风驱动的表面电流一般深度依赖的垂直涡动粘度。一种新的配方Ekman型流量,依赖于极坐标的转换,使我们能够表明,在北方半球的水平电流剖面的幅度衰减,顺时针方向旋转,随着深度的增加,无论在扩散率的垂直变化。使用扰动的方法,我们还推导出一个公式的偏转角的表面从风向的电流,并讨论其影响。
Surface ocean currents have a significant influence on the climate and their dynamics depend to a large extent on the behaviour of the vertical eddy viscosity. We present an analytic study of wind-driven surface currents for general depth-dependent vertical eddy viscosities. A novel formulation for Ekman-type flows, that relies of a transformation to polar coordinates, enables us to show that in the Northern Hemisphere the horizontal current profile decays in magnitude and turns clockwise with increasing depth, irrespective of the vertical variations in diffusivity. Using a perturbation approach, we also derive a formula for the deflection angle of the current at the surface from the wind direction and discuss its implications.
德雷克海峡的观测结果可以符合艾克曼的经典理论吗?
DOI: 10.1175/jpo-d-13-034.1
发表时间: 2013
影响因子: 3.5
作者:
Polton J
通讯作者: Polton J