Modelling fluxes of water and sediment between Venice Lagoon and the sea |
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| Authors: | Christian Ferrarin Andrea Cucco Georg Umgiesser Debora Bellafiore Carl L Amos |
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| Institution: | 1. Institute of Marine Science, National Research Council (ISMAR-CNR), Castello 1364/a, 30122 Venice, Italy;2. Institute for the Coastal Marine Environment, National Research Council (IAMC-CNR), Oristano, Italy;3. EuroMediterranean Centre for Climate Change (CMCC), Bologna, Italy;4. National Oceanography Centre (NOCS), Southampton, UK |
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| Abstract: | To describe the exchange of water and sediment through the Venice Lagoon inlets a 3-D hydrodynamic and sediment transport model has been developed and applied to a domain comprising Venice Lagoon and a part of the Adriatic Sea. The model has been validated for both current velocities and suspended particle concentration against direct observations and from observations empirically derived fluxes from upward-looking acoustic Doppler current profiler probes installed inside each inlet. The model provides estimates of the suspended sediment transport in the lower 3 m of the water column that is not detected by acoustic Doppler current profiler sensors. The bedload model prediction has been validated against measured sand transport rates collected by sand traps deployed in the Lido and Chioggia inlets. Results indicate that, in the Lido inlet, 87% of the total load is in suspension, while the rest moves as bedload. |
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| Keywords: | Finite element model Venice Lagoon Tidal inlets Sand transport |
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