Paolo Stocchi edited section_Hydrology_rivers_freshwater_and__.tex  about 8 years ago

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\section{Hydrology: rivers, freshwater and sediment supply}  The major fresh water source is the Po river, with an annual mean runoff of about 1 700 m3Js. Its maxima are much higher and are associated with snow melt in spring and strong precipitation in autumn (Marchetti, 1984). The annual mean runoff of the north- and west-coast rivers other than the Pois 350 m3Js; the rivers inflowing along the greater part of the eastern coast contribute about 700 m3/s, whereas the annual mean runoff concentrated along the 150 km of the eastern coast converging on the Otranto Strait amounts to about 1150 m3/s (Zore- Armanda, 1969 a). Along the eastern coast there are numerous submarine springs (known as "vrulje") which discharge fresh water originating in the littoral karst area (AlfireviĆ©, 1969) but are probably not of major importance in the overall water budget.  Inputs from the Po and other Italian rivers are mostly confined near the western coast, but a certain quantity is transferred offshore by means of Ekman transport and mesoscale circulation. The surface waters are freshened during spring and summer, as in the northern Adriatic, due to river runoff. Hence, the river runoff also exceeds evaporation during summer in the middle adriatic.