upwelling


Also found in: Dictionary, Encyclopedia, Wikipedia.

upwelling

an upward movement of water masses that results in nutrients being brought to the surface. Regions of upwelling are regions of high ocean productivity, occurring, for example, off the Peruvian coast where there are major stocks of anchovies.
References in periodicals archive ?
The spread of warm, nutrient-poor Gulf Stream water onto the shelf prevents cold, nutrient-rich water from upwelling to the surface.
finding vibrations that suggest an upwelling mass of rock underneath the northeastern region that stretches for a couple hundred miles.
Let's say that an upwelling has put the chill on some of your deeper water offshore hotspots where readings are in the 50s below a thermocline.
For this reason, the role of upwelling intensity in modifying reproductive investment needs to be considered in our assessment, despite the fact that we cannot simultaneously evaluate both factors (management regime and upwelling) at a given site (a site corresponds to one or the other: low or high upwelling influence).
According to the Stefan-Boltzmann law, the upwelling longwave radiation is proportional to the fourth power of the absolute temperature [T.
12, the BFAR said a fish kill might result from "sulfur upwelling," a natural phenomenon wherein the lake's toxic chemicals, like hydrogen sulfide and ammonia, rise to the surface and deplete the amount of the water's dissolved oxygen.
The upwelling of nutrients that feeds our fishery resources also draws high C[O.
Environmental influences such as upwelling or coastal trapped waves as well as climate influences such as El Nino southern oscillation and Pacific decadal oscillation events interact and modify the thermonutricline depth of this Humboldt Current System.
In the modern world, sulfur bacteria inhabit upwelling vent and seep areas known as "Black Smokers" and mediate phosphorite formation.
Along the South American Pacific coast, for example, water temperatures have been dropping over the past few decades, most likely because of an increase in the amount of upwelling, which brings cold, deep ocean water to the coast.
In the Pacific coast of Costa Rica, at Bahia Culebra, a coastal upwelling zone, this green alga has been spreading around the bay since 2001 (Fernandez & Cortes 2005).