Articles | Volume 10, issue 4
Research article
30 Oct 2019
Research article |  | 30 Oct 2019

Maximum power of saline and fresh water mixing in estuaries

Zhilin Zhang and Hubert Savenije

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Cited articles

Fischer, H. B., List, E. J., Koh, R. C. Y., Imberger, J., and Brooks, N. H.: Mixing in inland and coastal waters, Academic Press, New York, USA,, 1979. a, b
Gisen, J. I. A.: Prediction in ungauged estuaries, PhD thesis, Delft University of Technology, Delft, the Netherlands,, 2015.  a
Hansen, D. V. and Rattray Jr., M.: Gravitational circulation in straits and estuaries, J. Mar. Res., 23, 104–122, 1965. a, b
Kleidon, A.: Thermodynamic foundations of the Earth system, Cambridge University Press, London, UK,, 2016. a, b, c, d
Kuijper, K. and Van Rijn, L. C.: Analytical and numerical analysis of tides and salinities in estuaries; part II: salinity distributions in prismatic and convergent tidal channels, Ocean Dynam., 61, 1743–1765,, 2011. a, b
Short summary
Natural systems evolve towards a state of maximum power, including estuarine circulation. The energy of lighter fresh water drives circulation, while it dissipates by friction. This rotational flow causes the spread of salinity, which is represented by the dispersion coefficient. In this paper, the maximum power concept provides a new equation for this coefficient. Together with the steady-state equation, this results in a new analytical model for density-driven salinity intrusion.
Final-revised paper