The Equatorial Undercurrent

The Equatorial Undercurrent (Figures 5.1(b) and 5.2) is a major feature of equatorial circulation. Such an undercurrent occurs in all three oceans, although it is only a seasonal feature in the Indian Ocean. Equatorial Undercurrents flow from west to east, below the direct influence of the wind, yet they arc w ind-driven. How can this be The effect of the wind is transmitted downwards to deeper layers via turbulence (eddy viscosity) and is mainly confined to the mixed surface layer above the...