The Zennare Basin is part of the south catchment of the Lagoon of Venice, Italy, reclaimed during the 1930's for agricultural purposes. It is an area that lies almost completely below sea level and is characterized by the presence of peat deposits. Histosol drainage for agricultural practices has enhanced the loss of mass due to oxidation of organic matter leading to an increase of the land subsidence rate which is currently estimated to be roughly 2-3 cm/year. This subsidence causes the rise of the pumping and drainage costs and thus has an adverse effect on the sustainable development of the area. Within a research project aimed at studying the phenomenon by an experimental and a numerical approach, a site has been selected in the area of interest for the in situ monitoring of basic hydrogeological and meteorological parameters controlling the process. The first few months of data acquisition have shown that vertical movements of the peat surface is strongly related to the depth of the water table, soil moisture and temperature.
Monitoring of hydrological parameters related to peat oxidation in a subsiding coastal basin south of Venice, Italy
RIZZETTO F;TOSI L
2003
Abstract
The Zennare Basin is part of the south catchment of the Lagoon of Venice, Italy, reclaimed during the 1930's for agricultural purposes. It is an area that lies almost completely below sea level and is characterized by the presence of peat deposits. Histosol drainage for agricultural practices has enhanced the loss of mass due to oxidation of organic matter leading to an increase of the land subsidence rate which is currently estimated to be roughly 2-3 cm/year. This subsidence causes the rise of the pumping and drainage costs and thus has an adverse effect on the sustainable development of the area. Within a research project aimed at studying the phenomenon by an experimental and a numerical approach, a site has been selected in the area of interest for the in situ monitoring of basic hydrogeological and meteorological parameters controlling the process. The first few months of data acquisition have shown that vertical movements of the peat surface is strongly related to the depth of the water table, soil moisture and temperature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
