The rainwater on the lands above sea-level is approximately 108400 km3 year-1, and of this about one third reaches the oceans by way of rivers. The remaining two-thirds return to the atmosphere by evaporation and transpiration from plants. To satisfy the current demotechnic needs for fresh water, we must refer to the approximately 40000 km3 year-1 which make up the rivers, lakes and artificial reservoirs. In this chapter, the principal rivers and lakes on the various continents are described, listing their geographic location, flow rate, volumes, etc.; Italian rivers and lakes are treated in greater detail. Artificial reservoirs are also mentioned.
L'acqua piovana sulle terre emerse è di circa 108400 km3 anno-1, di questa circa un terzo raggiunge gli oceani attraverso i fiumi. I rimanenti due terzi tornano all'atmosfera per evaporazione e per traspirazione delle piante. Per soddisfare le attuali esigenze demotecniche di acqua dolce dobbiamo far riferimento ai circa 40000 km3 anno-1 che vanno a costituire i fiumi, i laghi e gli invasi artificiali. In questo capitolo vengono descritti i principali fiumi e laghi, nei diversi Continenti, dando di questi la localizzazione geografica, la portata, i volumi, ecc.; con maggior dettaglio vengono trattati i fiumi e i laghi italiani. Un cenno viene fatto anche agli invasi artificiali.
L'acqua nei fiumi e nei laghi
P Battista;F Benincasa;G Fasano;A Materassi
2003
Abstract
The rainwater on the lands above sea-level is approximately 108400 km3 year-1, and of this about one third reaches the oceans by way of rivers. The remaining two-thirds return to the atmosphere by evaporation and transpiration from plants. To satisfy the current demotechnic needs for fresh water, we must refer to the approximately 40000 km3 year-1 which make up the rivers, lakes and artificial reservoirs. In this chapter, the principal rivers and lakes on the various continents are described, listing their geographic location, flow rate, volumes, etc.; Italian rivers and lakes are treated in greater detail. Artificial reservoirs are also mentioned.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.