upwelling


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upwelling

[¦əp¦wel·iŋ]
(oceanography)
The process by which water rises from a deeper to a shallower depth, usually as a result of divergence of offshore currents.
References in periodicals archive ?
Sulfur upwelling can be noticed when the lake water becomes bluish-green with sulfur odor.
We hypothesize that variability in the abundance and diversity of the copepod community was principally driven by seasonal mesoscale activity (upwelling and eddies) and the moderate El Nino-La Nina event, which impacted the tropical Pacific during this period.
To provide additional observational evidence about latitudinal zoogeographic patterns, particularly in the southern region during the winter, to fill the previous knowledge gap, the present study has three goals: 1) to compare larval fish assemblages, in February-March (winter) vs November-December (autumn) of 2005, in a large portion of the GC; 2) to test if the regionalization of the Gulf of California, as previously proposed (Aceves-Medina et al., 2004), is seasonally valid, by comparing two cruises carried out in 2005; and 3) to analyze the effect of jets and eddies, coupled with upwelling processes, on the larval fish assemblages observed during November-December 2005.
The Northeast is "large and relatively stable," according to Levin, so the upwelling bubble of rock is unusual.
The upwelling longwave radiation [L.sub.1] [up arrow] depends mainly on surface temperature and slightly on surface properties.
The upwelling of nutrients that feeds our fishery resources also draws high C[O.sub.2] intermediate waters to the surface along our coast.
When El Nino occurs, there is disruption to the upwelling of cold nutrient-rich water along the Pacific coast of South America called the Humboldt Current.
At the head of Tokyo Bay, continual blowing of a northeasterly wind often causes coastal upwelling of oxygen-depleted bottom water, which leads to many deaths of shellfish and other aquatic animals around the bay.
The main reason why the GMR features such great diversity lies in its positioning in a complex transition zone between tropical and subtropical waters and intense local upwelling zones.
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.