Hydraulic zonation of the lagoons of Marano and Grado,Italy. A modelling approach |
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| Authors: | Christian Ferrarin Georg Umgiesser Marco Bajo Debora Bellafiore Francesca De Pascalis Michol Ghezzo Giorgio Mattassi Isabella Scroccaro |
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| Institution: | 1. Institute for the Coastal Marine Environment – National Research Council (IAMC-CNR), Oristano, Italy;2. Institute of Marine Science – National Research Council (ISMAR-CNR), Castello 1364/a, 30122, Venice, Italy;3. ARPA-FVG – Settore Acque OAA, Palmanova (UD), Italy |
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| Abstract: | The hydraulic regime-based zonation scheme of the Lagoons of Marano and Grado (Italy) has been derived by means of numerical models. A finite element modelling system has been used to describe the water circulation taking in account different forces such as tide, wind and rivers. The model has been validated by comparing the simulation results against measured water levels, salinity and water temperature data collected in several stations inside the lagoons. The analysis of water circulation, salinity and spatial distribution of passive tracers released at the inlets, led to a physically-based division of the lagoons system into six subbasins. The derived classification scheme is of crucial value for understanding the renewal capacity and pollutants distribution patterns in the lagoon. |
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| Keywords: | Marano and Grado lagoons finite element model zonation scheme salinity distribution |
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