Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | SIMULATION OF INSATURED FLOW IN SOIL USING EXPERIMENTAL DATA |
| Abstract | Water pollution from diffuse sources is one of the most important problems in groundwater protection activities. In this frame a good knowledge of the water flow in the unsatured zone is necessary to assess the risk of groundwater quality impoverishment. Mathematical modelling often represents a reliable and simple tool able to support in understanding all the physical phenomena and handling any possible managerial solution. Models application requires a number of hydrogeological information concerning all the parameters which are considered in flow and transport equations. These parameters often need to be determined by experimental tests. Consequently, a strong limitation in using mathematical models is due to the not unusual lack of these parameters. This paper reports the results of an experimentation, carried out with the purpose of defining the necessary parameters to set up and run a model to simulate the water flow in the unsatured zone. Incoming and outgoing flows were measured, almost weekly, for six months, in three lysimeters filled with a specific type of soil, cropped with loietto and irrigated with drinkable water. Using these measured data a daily water balance was performed and, later, verified using the soil moisture values measured, monthly, along the vertical profile of each lysimeter. The water balance validation produced a time series of daily incoming and outgoing flows used as boundary conditions for the model simulations. Measured values of the water content, along the vertical profile of each lysimeter, were also used for the model calibration. Satinsat, a computer program for simulating saturated/unsaturated two-dimensional flow and transport in groundwater system was used. Results in form of daily water balances, water content vs hydraulic conductivity and soil depth are reported, which confirmed that Satinsat well represents the hydrodynamics of the considered system. |
| Source | 1st EGU General Assembly, Nizza (FRA), 25-30 Aprile 2004 |
| Year | 2004 |
| Type | Abstract in atti di convegno |
| Authors | CAPUTO M.C., DE GIROLAMO A.M., PASSARELLA G. |
| Text | 119313 2004 SIMULATION OF INSATURED FLOW IN SOIL USING EXPERIMENTAL DATA CAPUTO M.C., DE GIROLAMO A.M., PASSARELLA G. M. C. Caputo, A. M. De Girolamo, G. Passarella Water Research Institute I.R.S.A. , Italian National Research Council C.N.R. Convegno internazionale organizzato da EGU, the European Geosciences Union 1st EGU General Assembly Nizza FRA 25 30 Aprile 2004 Internazionale Contributo Water pollution from diffuse sources is one of the most important problems in groundwater protection activities. In this frame a good knowledge of the water flow in the unsatured zone is necessary to assess the risk of groundwater quality impoverishment. Mathematical modelling often represents a reliable and simple tool able to support in understanding all the physical phenomena and handling any possible managerial solution. Models application requires a number of hydrogeological information concerning all the parameters which are considered in flow and transport equations. These parameters often need to be determined by experimental tests. Consequently, a strong limitation in using mathematical models is due to the not unusual lack of these parameters. This paper reports the results of an experimentation, carried out with the purpose of defining the necessary parameters to set up and run a model to simulate the water flow in the unsatured zone. Incoming and outgoing flows were measured, almost weekly, for six months, in three lysimeters filled with a specific type of soil, cropped with loietto and irrigated with drinkable water. Using these measured data a daily water balance was performed and, later, verified using the soil moisture values measured, monthly, along the vertical profile of each lysimeter. The water balance validation produced a time series of daily incoming and outgoing flows used as boundary conditions for the model simulations. Measured values of the water content, along the vertical profile of each lysimeter, were also used for the model calibration. Satinsat, a computer program for simulating saturated/unsaturated two dimensional flow and transport in groundwater system was used. Results in form of daily water balances, water content vs hydraulic conductivity and soil depth are reported, which confirmed that Satinsat well represents the hydrodynamics of the considered system. SIMULATION OF INSATURED FLOW IN SOIL USING EXPERIMENTAL DATA Abstract presentato a Convegno internazionale organizzato da EGU, the European Geosciences Union INT_Abstract_Poster_02.pdf Abstract in atti di convegno Copernicus GmbH 1029 7006 Geophysical research abstracts Geophysical research abstracts Geophys. res. abstr. Geophysical research abstracts. annamaria.degirolamo DE GIROLAMO ANNA MARIA giuseppe.passarella PASSARELLA GIUSEPPE mariaclementina.caputo CAPUTO MARIA CLEMENTINA TA.P04.005.008 Integrazione di metodologie per il monitoraggio e la modellizzazione per la gestione delle risorse idriche |