Nonlinear hydrodynamics in a Mediterranean lagoon

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 run...

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Bibliographic Details
Published in:Nonlinear processes in geophysics 2013-03, Vol.20 (2), p.189-198
Main Authors: Alekseenko, E, Roux, B, Sukhinov, A, Kotarba, R, Fougere, D
Format: Article
Language:English
Subjects:
Bathymetry
Earth Sciences
Engineering Sciences
Fluid mechanics
Fluids mechanics
Geophysics
Mechanics
Nonlinear equations
Reynolds equation
Runoff
Sciences of the Universe
Water
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Summary: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. [PUBLICATION ABSTRACT]
ISSN:1607-7946
1023-5809
1607-7946
DOI:10.5194/npg-20-189-2013