A new study has found that freshwater deposited by rivers into the ocean can affect the dynamics of these eddies
and make them even more effective in intensifying storms.
A computer model that clarifies the complex processes driving ocean mixing in the vast eddies
that swirl across hundreds of miles of open sea has been developed by scientists at Los Alamos (N.
have huge impact: A team of US researchers has discovered that huge oceanic eddies
, some of which can be 500 kilometres across at the surface, can reach the seafloor at mid-ocean ridges.
Off the west coast of Greenland, large, spinning rings of warm water, called eddies
, occasionally form in the ocean, like dust devils in the wind, and drift intact for years in the cold Labrador Sea.
Large blooms of plankton often appear in ocean eddies
, temporary swirls that sometimes bring cool, nutrient-rich water to the surface.
Space provides an excellent vantage point from which to view and study gigantic ocean eddies
competition is unique in that magazines are evaluated against their own mission statements, rather than the competition.
But clarifying the exact climatic impact of eddies
is complicated by their nebulous boundaries, which hinder measurements of the amount of water they carry.
A magnetic field tends to disrupt superconductivity when eddies
of electric current created by the magnetic field move along with the main current.
But unlike destructive hurricanes, eddies
can be productive.
Just as the atmosphere's large- and small-scale motions mix the air, the ocean's hierarchy of eddies
blends cold waters with warm, the nutrient-rich with the nutrient-poor, and the salt-laden with fresher waters.
In 1990, satellite ocean color images were used to identify large, 400-kilometer-diameter, clockwise-rotating eddies
that appeared to be separating from the North Brazil Current as it turned sharply to the east, much as warm-core Gulf Stream rings form northward meanders.
In the iridescent eddies
of a soap film, scientists see a parallel to the whirling flows of Earth's thin coating of atmosphere and oceans.
Using a mathematical model, they demonstrate that ocean currents or large fields of random eddies
and vortices can sporadically concentrate a steady ocean swell to create unusually large waves.
Shuchman and his colleagues reportthat SAR helped them located the position of transient eddies
near the ice edge.