from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act or an instance of rising up from or as if from a lower source: an upwelling of emotion.
  • n. A process in which cold, often nutrient-rich waters from the ocean depths rise to the surface.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An upward movement from a lower source.
  • n. the oceanographic phenomenon that occurs when strong, usually seasonal, winds push water away from the coast, bringing cold, nutrient-rich deep waters up to the surface


from Wiktionary, Creative Commons Attribution/Share-Alike License

From up- +‎ welling.


  • Every seven years, due to the interference of El Niño currents the cold water upwelling is altered.

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  • Deep ocean currents surface near Antarctica a process called upwelling, bringing with them lots of nutrients and dissolved carbon dioxide.

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  • Andrus and colleagues at the University of Arizona and the University of Maine, were awarded a $600,000 National Science Foundation grant to develop a better understanding of a deep ocean phenomenon known as upwelling and its impact on the climate and the economy of the people who lived in Peru over the past 13,000 years.

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  • The bloom could have been fed by nutrients washed down the Columbia River from farms in eastern Washington and Oregon, or from an ocean condition known as upwelling, where cold water rich with nutrients is pushed toward the surface by the wind. - latest science and technology news stories

  • The ecosystem provides a favorable reproductive habitat for anchovies and sardines, when physical processes such as upwelling and mixing combine favorably in special configurations (Bakun, 1993), so that fish larvae remain close to food sources.

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  • There's a curious dark spot there -- presumably some kind of upwelling, perfectly round, almost a thousand kilometers across.

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  • "The interaction between the subsurface currents and canyons brings higher nutrient water to the surface which we call 'upwelling'," Charitha says.

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  • That's because right now cold water from the deeper part of the gulf is "upwelling" across the continental shelf and headed for coastal areas,


  • Scientists have documented a reduction in the usual "upwelling" of nutrient-rich currents that generate food for salmon while they are in the ocean.


  • El Niño events tend to reduce "upwelling" in the ocean, which means less deep water rises to the surface, taking with it the nutrients that support Co News of the Underwater World


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