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| | | #REDIRECT [[Eddy]] |
| #REDIRECT [[eddy]] | |
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| == eddy ==
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| #<div class="definition"><div class="short_definition">By analogy with a molecule, a "glob" of fluid within the fluid mass that has a certain structure and life history of its own, the activities of the bulk fluid being the net result of the motion of the eddies.</div><br/> <div class="paragraph">The concept is applied with varying results to phenomena ranging from the momentary spasms of the [[wind]] to [[storms]] and [[anticyclones]].</div><br/> </div>
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| #<div class="definition"><div class="short_definition">Any [[circulation]] drawing its [[energy]] from a flow of much larger [[scale]], and brought about by [[pressure]] irregularities, as in the lee of a solid obstacle.</div><br/> </div>
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| #<div class="definition"><div class="short_definition">In studies of the [[general circulation]], departures of a [[field]] (e.g., [[temperature]] or [[relative vorticity]]) from the [[zonal]] mean of that field.</div><br/> </div>
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| #<div class="definition"><div class="short_definition">A [[closed circulation]] system produced as an offshoot from an [[ocean current]].</div><br/> <div class="paragraph">Eddies are the result of the [[turbulence]] of the oceanic [[circulation]] and are common throughout the World Ocean. The corresponding features in the [[atmosphere]] are the [[wind]] currents around high and low pressure disturbances. Oceanic [[cyclonic]] eddies have a shallow [[thermocline]] at the center and are therefore also known as cold-core eddies; [[anticyclonic]] eddies are associated with a depressed thermocline in the center and are also known as warm-core eddies. The most prominent eddies are those shed by western [[boundary currents]], also known as rings; they are about 200 km in diameter and reach beyond a depth of 1500 m. Another class of eddies is produced by [[shear]] between currents flowing in opposing directions. These eddies tend to be smaller (10–50 km in diameter) and shallower.</div><br/> </div>
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