Abstract
Dispersion processes in semi-enclosed basins where the flow is mainly forced by the tidal motion are studied by means of an advection—diffusion model. A parametric study was performed by varying the diffusion coefficient, the type of boundary conditions at the open boundaries of the basin and the initial position of the release. We analyzed the dependence of the initial and the asymptotic phases of the dispersion process and of the residence time in the basin, on the above parameters, and on the flow patterns corresponding to different hydrodynamic scenarios. We showed that the tidal forcing produces, on the average, a stationary diffusion process. Differences with dispersion in a stationary unidirectional flow were assessed.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Bellucci, A., G. Buffoni, A. Griffa & E. Zambianchi, 1999. A parametric study of dispersion processes in semi-enclosed basins. Dyn. Atm. Ocean (subm.).
Buffoni, G., A. Cappelletti & E. Cupini, 1996. Advection—diffusion processes and residence times in semi-enclosed basins. Int. J. Numerical Meth. Fluids 22: 1207–1229.
Buffoni, G., P. Falco, A. Griffa & E. Zambianchi, 1997. Dispersion processes and residence times in a semi-enclosed basin with recirculating gyres. An application to the Tyrrhenian Sea. J. Geophys. Res. 102, C8: 18699–18713.
Mezic, I., J. F. Brady & S. Wiggins, 1996. Maximal effective diffusivity for time-periodic incompressible fluid flows. SIAM J. Appl. Math. 56: 40–56.
Nihoul, J. C. J., 1972. Hydrodynamical and biochemical state variables and evolution equations for the mathematical modelling of sea pollution. Mem. Soc. R. Sci. Liege II: 111–123.
Nihoul, J. C. J. (ed.), 1975. Modelling of Marine Systems. Elsevier, Amsterdam, 272 pp.
Pao, C. V., 1992. Nonlinear Parabolic and Elliptic Equations, Plenum Press, New York, 777 pp.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1999 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Buffoni, G., Griffa, A., Zambianchi, E. (1999). Modelling of dispersion processes in a tide-forced flow. In: Blomqvist, E.M., Bonsdorff, E., Essink, K. (eds) Biological, Physical and Geochemical Features of Enclosed and Semi-enclosed Marine Systems. Developments in Hydrobiology, vol 135. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0912-5_3
Download citation
DOI: https://doi.org/10.1007/978-94-017-0912-5_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5250-6
Online ISBN: 978-94-017-0912-5
eBook Packages: Springer Book Archive