Image via Wikipedia Narrated by Jeremy Irons, this video depicts the long journey of a plastic bag -- from a grocery store parking lot to its home in the Great Pacific Ocean Garbage Patch, caught in an Ocean gyre: (from Wikipedia).
URL: http://www.youtube.com/watch?v=GLgh9h2ePYw&feature=player_embedded, or
The following are the five most notable gyres:
“Gyres are caused by the Coriolis Effect; planetary vorticity along with horizontal and vertical friction, which determine the circulation patterns from the wind curl (torque). The term gyre can be used to refer to any type of vortex in the air or the sea, even one that is man-made, but it is most commonly used in oceanography, to refer to the major ocean systems.”
See also, Great Pacific Garbage Patch
Other links:
North Pacific Gyre Oscillation — Georgia Institute of Technology
SIO 210: Introduction to Physical Oceanography - Global circulation
SIO 210: Introduction to Physical Oceanography - Wind-forced circulation notes
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