Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Modeling Unsaturated-Saturated Flow and Nickel Transport in Fractured Rocks |
| Abstract | This study investigated the modeling of variably saturated flow and Ni transport in frac- tured rocks at a site (Altamura, southern Italy) polluted in 2001 by unauthorized sludge waste disposal. Time-lapse electrical resistivity tomography (ERT) and infiltrometer experi- mental results were used to constrain near-surface boundary conditions in an unsaturated flow model. A plastic ring was used as an infiltrometer because its experimental setup is very versatile and adaptable to many different geological conditions, taking into con- sideration irregularities in the soil and rock surfaces. The proposed methodology allows switching from the tomography to the map of water pressure contour lines obtained by the model by making the time-lapse ERT an effective tool to reduce computational uncertain- ties. Simulation results predicted both the concentration and the residence time of the Ni in the vadose zone of the Altamura site. These results were used to successively investigate the horizontal Ni transport into the deep fractured aquifer. Simulations provided apparent Ni pathways in the groundwater and expected concentrations in a downstream well, placed 10.9 km from the contamination sources. The agreement of the results with the sampling data collected has confirmed that the groundwater was polluted for 16 mo by Ni. The con- tamination plume started during the winter of 2004 and moved in the groundwater toward the sea at an average velocity of 10 m/d. |
| Source | Vadose zone journal 10, pp. 1045–1057 |
| Keywords | Fractured aquifersMathematical Models |
| Journal | Vadose zone journal |
| Editor | Soil Science Society of America,, Madison, Wis., Stati Uniti d'America |
| Year | 2011 |
| Type | Articolo in rivista |
| DOI | 10.2136/vzj2010.0087 |
| Authors | Masciopinto C., Caputo M.C. |
| Text | 42453 2011 10.2136/vzj2010.0087 Fractured aquifers Mathematical Models Modeling Unsaturated Saturated Flow and Nickel Transport in Fractured Rocks Masciopinto C., Caputo M.C. Consiglio Nazionale delle Ricerche, Isti tuto di Ricerca Sulle Acque, Reparto di Chimica e Tecnologia delle Acque, via Francesco De Blasio 5, 70132 Bari, Italy. This study investigated the modeling of variably saturated flow and Ni transport in frac tured rocks at a site Altamura, southern Italy polluted in 2001 by unauthorized sludge waste disposal. Time lapse electrical resistivity tomography ERT and infiltrometer experi mental results were used to constrain near surface boundary conditions in an unsaturated flow model. A plastic ring was used as an infiltrometer because its experimental setup is very versatile and adaptable to many different geological conditions, taking into con sideration irregularities in the soil and rock surfaces. The proposed methodology allows switching from the tomography to the map of water pressure contour lines obtained by the model by making the time lapse ERT an effective tool to reduce computational uncertain ties. Simulation results predicted both the concentration and the residence time of the Ni in the vadose zone of the Altamura site. These results were used to successively investigate the horizontal Ni transport into the deep fractured aquifer. Simulations provided apparent Ni pathways in the groundwater and expected concentrations in a downstream well, placed 10.9 km from the contamination sources. The agreement of the results with the sampling data collected has confirmed that the groundwater was polluted for 16 mo by Ni. The con tamination plume started during the winter of 2004 and moved in the groundwater toward the sea at an average velocity of 10 m/d. 10 Published version Modeling Unsaturated Saturated Flow and Nickel Transport in Fractured Rocks VZJ_2011_.pdf Articolo in rivista Soil Science Society of America, 1539 1663 Vadose zone journal Vadose zone journal Vadose zone j. Vadose zone journal VZJ VZJ online mariaclementina.caputo CAPUTO MARIA CLEMENTINA costantino.masciopinto MASCIOPINTO COSTANTINO TA.P04.005.010 Metodi, dispositivi di stima dei parametri idrogeologici e modelli matematici |