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Lagrangian models of dispersion in marine environment

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Abstract

Turbulent dispersion can be studied successfully by using Lagrangian particle models. In general, the prediction of correct concentration fields is a complex issue when the turbulent field is inhomogeneous and non-stationary. Two classes of Lagrangian dispersion models have been considered in this work, which are based on the Wiener process and the so called “well-mixed” criterion. In order to test the performances of these models and shed light on the underlying physical processes and modeling assumptions, four different numerical models have been compared and tested by means of their long time behavior by considering several study cases concerning idealized marine environment. Furthermore, the coupling of the community model Princeton Ocean Model (POM) with the Lagrangian model LASEMOD (LAgrangian SEa MODel) is used to investigate the temporal and spatial evolution of a passive pollutant released in the vicinity of the coast in the Tyrrhenian Sea basin. The simulation shows with reasonable accuracy the time evolution of both the hydrodynamic and the concentration fields and provides a useful insight into the evaluation of the environmental impact of pollutant releases along the coast.

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Authors and Affiliations

  1. Dipartimento di Idraulica Trasporti e Strade, “Sapienza” Università di Roma, Via Eudossiana 18, 00184, Rome, Italy

    Paolo Monti & Giovanni Leuzzi

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  1. Paolo Monti
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  2. Giovanni Leuzzi
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Correspondence to Paolo Monti.

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Monti, P., Leuzzi, G. Lagrangian models of dispersion in marine environment. Environ Fluid Mech 10, 637–656 (2010). https://doi.org/10.1007/s10652-010-9184-x

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  • DOI: https://doi.org/10.1007/s10652-010-9184-x

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