These long term effects include gyre circulations—the largest systems of rotating ocean currents—and meridional overturning, ...

Ocean currents are movements of water horizontally ... They flow in circular loops or gyres. Gyres are spiral oceanic surface currents and are found in both the Northern and Southern Hemispheres.

Much of the debris that ends up in the North Pacific Ocean gets drawn into the North Pacific Gyre by currents. The North Pacific Gyre is a swirling vortex of water made up of four prevailing ...

In one of the planet's five great oceanic gyres, human made marine debris becomes trapped in a circular ocean current that stretches from the east coasts of North America to the west coasts of ...