chapter - Atmospheric and Oceanic Science
chapter - Atmospheric and Oceanic Science
chapter - Atmospheric and Oceanic Science
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Physiography <strong>and</strong> Hydrology<br />
forcings of synoptic scale. Due of its small longitudinal gradient <strong>and</strong> with a basin<br />
that has a comparatively narrow transverse section, the delay between the precipitation<br />
<strong>and</strong> the discharge of the river is short (Tossini 1959).<br />
The climatic characteristics of the basin determine the possibility of occurrence<br />
of floods in any time of the year. As the slope is pronounced, floods caused<br />
as consequence of intense rains are rapid <strong>and</strong> concentrated on small areas.<br />
Figure 4.4 shows mean flows of the Uruguay River at different sections. The<br />
hydrological regime presents large discharges in Winter <strong>and</strong> lower waters in<br />
Summer.<br />
Fig. 4.4. Mean flows of the Uruguay River at different sections.<br />
[Mining of the Argentine RepublicWWWeb, National Operator of the System-Brazil. WWWeb]<br />
4.5. Slopes in the basin<br />
In Table 4.5 mean slopes in the main rivers of the La Plata basin are presented.<br />
Table 4.5. Slopes in the main systems of the La Plata basin<br />
Basins Terrain slope (m/km) Fluvial slope (m/km)<br />
Alto Paraná 0,284 0,232<br />
Paraguay 0,055 0,037<br />
Bajo Paraná 0,036 0,042<br />
Uruguay 0,103 0,086<br />
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