Eddies appear in the ocean like in the atmosphere. Atmospheric eddies are short-lived, extremely speedy, and often very hazardous. Oceanic eddies are slower and can be observed only with the use of special equipment, but these eddies gently mixing ocean waters affect the climate in general.
For more than ten years specialists from the Pacific Institute of Oceanology in Vladivostok have observed the oceanic eddies formed at the confluence of two largest undercurrents in the west of the Pacific Ocean, Kuroshio and Oyashio. These eddies are generated to the east of Japan and move to the north along the Kuril-Kamchatka Trench involving water masses from the bottom to the surface.
The velocity of eddies is not high, about 1 cm per second, and their lifetime is several months. At a depth of 400-600 meters, there is a `core` of the eddy, i.e., the water captured at the time of its birth and transported to a significant distance.
Tatiana Pitchugina | alphagalileo
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