https://oceanwiki.ethz.ch/ 2026-10-02T21:22:22+00:00 https://oceanwiki.ethz.ch/ https://oceanwiki.ethz.ch/lib/exe/fetch.php?media=wiki:logo.png text/html 2014-05-07T11:57:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://oceanwiki.ethz.ch/doku.php?id=lecture9:stommel&rev=1399463827&do=diff Stommel Theory of the Gulf Stream Author: Seraina Klaus Western Boundary Current Surface currents located on the western side of the subtropical gyres, so-called western boundary currents, are faster than their eastern counterparts. In fact, they are among the text/html 2017-05-15T10:12:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://oceanwiki.ethz.ch/doku.php?id=lecture9:sverdrup&rev=1494843128&do=diff Sverdrup Relation Author: Natalie Kuster, Roland Häberli The Sverdrup relation is a theoretical relationship between the wind stress exerted on the surface of the open ocean and the vertically integrated meridional (north-south) transport of ocean water. \begin{equation*} \frac{du}{dt} - fv = - \frac{1}{\rho} \frac{\partial P}{\partial x} + A_H \nabla^2_H u + \frac{1}{\rho} \frac{\partial \tau^x}{\partial z} \end{equation*}\begin{equation*} \frac{dv}{dt} + fu = - \frac{1}{\rho} \frac{\part… text/html 2014-05-07T11:59:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://oceanwiki.ethz.ch/doku.php?id=lecture9:vorticity&rev=1399463956&do=diff Vorticity Author: Ronny Meier The vorticity (ω) of a velocity field is used in fluid dynamics to describe the local spinning of the fluid. In other words it expresses how a fluid particle moves relatively to the particles in the fluid just next to it. To understand the effects of the vorticity better it is useful to imagine one part of the fluid to become solid. Would the particle rotate around its own axis while moving with the flow this would mean that the velocity field has a vorticity une…