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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 20, issue 2
Nonlin. Processes Geophys., 20, 189–198, 2013
https://doi.org/10.5194/npg-20-189-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Nonlinear dynamics of the coastal zone

Nonlin. Processes Geophys., 20, 189–198, 2013
https://doi.org/10.5194/npg-20-189-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 04 Mar 2013

Research article | 04 Mar 2013

Nonlinear hydrodynamics in a Mediterranean lagoon

E. Alekseenko1, B. Roux2, A. Sukhinov3, R. Kotarba2, and D. Fougere2 E. Alekseenko et al.
  • 1IFREMER, Brest, France
  • 2M2P2 UMR 7340 CNRS – Aix-Marseille University and Ecole Centrale Marseille, Marseille, France
  • 3Southern Federal University, Taganrog, Russia

Abstract. The paper addresses the application of the nonlinear hydrodynamics model (RANS (Reynolds-averaged Navier–Stokes) equations) in a wide semi-enclosed Mediterranean lagoon (Berre lagoon), considering three natural forcing functions, i.e., sea tide propagating through a long narrow channel, wind and runoff. Main attention is focused to characteristic velocities (at free surface and bottom) and to free surface elevation associated to each of these three mechanisms, with special attention to the nearshore areas (i.e., in shallow water). The most interesting result concerns wind effects which, due to Berre lagoon bathymetry, give rise to downwind coastal jets, alongshore, in shallow water areas. Such coastal jets were never mentioned before in Berre lagoon literature.

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