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3. Hydrography

Figure 2 shows temperature, salinity and oxygen in the three hydrographical sections made. The features of the subsurface waters show close similarity to the findings of the previous surveys. There is an prominent upwelling off the Maroni river, less prominent but still present off Orinoco, while the section off Demera river have slight, if any, indications of such. In the surface waters the two northern profiles show a major increase in freshwater runoff from the rivers, compared to the previous survey.

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