Upwelling occurs in the northern gyre and downwelling in the southern gyre.
Subtropical gyres occupy a large fraction of the world's ocean and are more productive than originally thought.
On the relationships between primary, net community, and export production in subtropical gyres.
As with other patches in each of the five oceanic gyres, the plastics in it break down to ever smaller particles, and to constituent polymers.
Wind-driven surface currents interact with these gyres and the underwater topography, such as seamounts and the edge of continental shelves, to produce downwellings and upwellings.
However, along the equatorial edge of the gyres, one finds a stagnant pool of water which has no direct connection to the ocean surface.
As a result, large-scale horizontal flows of air or water tend to form clockwise-turning gyres.
Using two downwelling inlets on both sides of the tank lets gravity create two gyres in the tank.
