如果盛行风在北半球向东移动,科里奥利效应会作用于水吗?-地江南体育网页版球科学堆栈交换江南电子竞技平台 最近30个来自www.hoelymoley.com 2023 - 04 - 04 - t01:40:52z //www.hoelymoley.com/feeds/question/13247 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/13247 4 如果盛行风在北半球向东移动,科里奥利效应会作用于水吗? 本•亨特 //www.hoelymoley.com/users/12123 2018 - 01 - 31 - t15:29:21z 2018 - 01 - 31 - t17:39:15z 我在上海洋环境科学II课,我们正在讨论埃克曼螺旋。据我所知,当观测到的东西不改变纬度时,科里奥利效应就不会发生。那么,假设北半球海洋上方的风是在纬度不变的情况下向东吹来的,风下的水会以埃克曼螺旋的形式向右偏转吗?提前谢谢你!< / p > //www.hoelymoley.com/questions/13247/-/13248#13248 5 如果盛行风在北半球向东移动,科里奥利效应会作用于水吗? JeopardyTempest //www.hoelymoley.com/users/6298 2018 - 01 - 31 - t16:14:12z 2018 - 01 - 31 - t17:39:15z 科里奥利效应在所有方向上都同样发生,即使是直纬向风(东西向)。

许多人确实挣扎于这个想法- 这个物理SE问题有一个公平的解释为什么。< / p >

As arkaia commented, the total deflection magnitude is $f=2{\omega}\cdot{\sin(latitude)}$, which is an orthogonal vector change (and as such shows up as terms in both the zonal and meridional velocity equations).

So there's still deflection to the right (in the NH) equally regardless of which direction the air/water is flowing (except that in such a feature, deeper water is moving slower, so deflects by less magnitude... but still matching in regards to the proportion in comparison to the velocity). Otherwise the result would not be a spiral... but only at most a 90° decaying curve, since as the water begins to turn towards a more zonal direction, the angle of deflection would start to decrease, until at some height the water is moving easterly (or westerly) (such as at height labeled 3 in this diagram), and the water below it wouldn't turn further. So the direction independence of Coriolis is vital to there being Ekman spirals at all.

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