In which boundary currents do eddies typically not form?

Eddies are small-scale circulation features that typically form in boundary currents due to differences in flow velocities or thermal gradients. In eastern boundary currents, which are characterized by slower velocities and broader flow, the conditions are often not conducive to the formation of eddies. These currents are found along the eastern coasts of ocean basins and tend to be more stable and less turbulent compared to western boundary currents.

Western boundary currents, like the Gulf Stream and Kuroshio Current, exhibit strong, fast-moving flows and are known to create significant eddies through their interactions with the surrounding water masses and the bottom topography. These eddies can have a considerable impact on local ecosystems and climate.

Equatorial currents, while they can form eddies, are shaped by different factors, such as wind patterns and the Coriolis effect, but they do exhibit eddy formation under certain conditions. Global currents may also contribute to the formation of eddies at various points but are not categorized like boundary currents.

Overall, the dynamics of eastern boundary currents render them less likely to produce eddies compared to the more vigorous currents found at the western boundaries or in equatorial regions.