upwelling

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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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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The mean temperature of the surface layer (0-50 m) was warmest during Jan (26.8 [degrees]C), which coincided with the expanded mixed layer depth (MLD 45.8 m), the highest value of the Multivariate Enso Index (MEI 1.52) and the lowest value of the Coastal Upwelling Index (CUI; https://www.pfeg.noaa.gov/ products/PFEL/modeled/indices/upwelling/ NA/data_download.html).
Along seven selected longitudinal transects, vertical profiles of temperature and density were obtained to detect the thermocline and pycnocline depth, and confirm where the coastal upwelling likely occurred using further evidence from Aqua MODIS SST and chlorophyll satellite images (https://coastwatch.noaa.
Due to continual blowing of a northeasterly wind, coastal upwelling associated with "Aoshio" phenomenon can be observed along the coastline from off Funabashi to off Chiba.
In addition to FLH data, satellite chlorophyll (CHL) is analyzed given its relationship to winds and currents in coastal upwelling zones [42, 43].
In terms of biomass, CHL mean was 1.147 mg [m.sup.-3] and high values found at the Big Islands region and at the peninsular coastal zone were both mostly related to the strong tidal mixing [44, 45] and to coastal upwelling events [46] present in this season, respectively.
However, most studies of the origin and composition of OM have been focused on estuary systems and only a few studies (e.g., Sanchez and Carriquiry, 2007a,b; Aguiniga et al., 2010; Sanchez et al., 2010) have been made in arid systems where the transport by river or arroyos is null, the aeolian transport is the main source of terrigenous material and the coastal upwelling is responsible for marine productivity in continental margin.
Management of these highly productive coastal upwelling ecosystems has historically been based on single species assessments, although the science informing management has long recognized the limited power of this approach.
The superficial trade winds are of great intensity and the ocean remains relatively cold in the eastern region, due to the coastal upwelling, with low evaporation and little rain.
Washington, December 17 (ANI): In a new study, a team of scientists, using algae records from the early Pliocene, when earth's climate was warmer, has suggested that coastal upwelling off the California coast was sustained in this period even though sea surface temperatures were several degrees higher than today.
micans in the coastal area of Cape Frio region at stations where temperatures were lower (from 16.8 to 17[degrees]C), which may be attributed to the coastal upwelling, when South Atlantic Central Water intrudes over the continental shelf and reaches the surface.
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