Which boundary current is primarily influenced by the Coriolis effect?

The western boundary current is primarily influenced by the Coriolis effect due to the rotation of the Earth. This effect causes moving fluids, such as ocean currents, to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

As warm water from the equator moves poleward, it is deflected westward along the western edge of ocean basins. This leads to narrow, fast-flowing currents, such as the Gulf Stream in the Atlantic Ocean and the Kuroshio Current in the Pacific Ocean. The Coriolis effect contributes significantly to the strength and direction of these currents, making them an essential component of ocean circulation and climate systems. The distinctive characteristics of western boundary currents, including their warm water transport and depth, can be attributed to the interaction of the Coriolis effect with coastal geography, further emphasizing their relation to this physical phenomenon.

In contrast, other types of currents such as coastal, equatorial, and transverse currents do not exhibit the same degree of influence from the Coriolis effect in shaping their paths and characteristics.