Processi di subsidenza ed intrusione salina nell'area veneziana: potenziali cause di desertificazione (Articolo in rivista)

Type
Label
  • Processi di subsidenza ed intrusione salina nell'area veneziana: potenziali cause di desertificazione (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • TOSI L.(*); CARBOGNIN L.(*); GASPARETTO-STORI G.; RIZZETTO F.(*); STROZZI T.; TEATINI P.(*) (2008)
    Processi di subsidenza ed intrusione salina nell'area veneziana: potenziali cause di desertificazione
    in Rendiconti online Società Geologica Italiana
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • TOSI L.(*); CARBOGNIN L.(*); GASPARETTO-STORI G.; RIZZETTO F.(*); STROZZI T.; TEATINI P.(*) (literal)
Pagina inizio
  • 758 (literal)
Pagina fine
  • 759 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 3 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (*) ISMA-CNR, Venezia (literal)
Titolo
  • Processi di subsidenza ed intrusione salina nell'area veneziana: potenziali cause di desertificazione (literal)
Abstract
  • The catchment south of the Venice Lagoon is threatened by shallow aquifer salinization and land subsidence. Although the area is not experiencing everywhere saline contamination and high sinking rates, a very serious situation has been brought to light in a large portion of the coastal farmland. The salt water contamination extends up to 20 km inland from the coast. The depth of the fresh/salt-water interface varies from 1 to 30 m below the ground level and exhibits a significant, mainly seasonal, time variation. The dynamics of the soil salinization process is especially sensitive to changes in river (Brenta, Bacchiglione, Adige, Gorzone) discharges, in groundwater and channel levels, regulated by a number of pumping stations of the reclamation network, and in climate conditions. At the same time an ongoing land subsidence, with rates varying from few mm/yr to cm/yr, affects the southern lagoon margin and the nearby watershed. The settlement of these territories is mainly due to natural consolidation and geochemical subsidence, i.e. peat oxidation promoted by farming activities. Salt water intrusion and land subsidence combined with significant dry seasons expose this area to the potential soil desertification. The combined effect of both processes is producing an alarming social and environmental impact on the south Venice coastland, also in relation to the expected global climate change. (literal)
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