topographic curl effect

topographic curl effect

[¦täp·ə¦graf·ik ′kərl i‚fəkt]
(oceanography)
A term in Ekman's differential equation for the effects of variable wind stress, variable depth, variable friction, and variable latitude on the deep current; tends to make the curl G (velocity of deep current) positive when the current flows over increasing depth and negative when the depth decreases in the direction of the current.