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The contrasting oceanography of the Rhodes Gyre and the Central Black Sea

Gaines, A.F. and Copeland, G.J.M. and Coban-Yildiz, Y. and Ozsoy, E. and Davie, A.M. and Konovalov, S.K. (2006) The contrasting oceanography of the Rhodes Gyre and the Central Black Sea. Turkish Journal of Engineering and Environmental Sciences, 30. pp. 69-81. ISSN 1300-0160

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    Abstract

    The Rhodes Gyre, a prominent feature of the oceanography of the eastern Mediterranean, is modelled as a vertical, continuous flow, cylindrical reactor illuminated during the day at its upper end. If the Gyre is supposed to be in a steady state whilst the concentrations, C, of a chemical are being measured, the nett rate of formation or consumption of the chemical is given by -w d C/d z + u d C/d r, where w is the upward velocity of the water in the vertical, z , direction and u is the velocity of the water in the radial, r, direction. The behaviour of w and u is analysed to show that the Gyre may be used as a field laboratory in which rates of chemical change may be derived from depth profiles together with values of the surface velocities of the Gyre waters. In contrast, the central Black Sea is modelled as an ideal, strongly stratified sea in which the nett rates of formation or consumption of chemicals under steady state conditions are given by Ds d2C/ds 2, where s is the water density and Ds is an eddy diffusion coefficient. Computations reveal that, given better knowledge of its eddy diffusion coefficients, the Black Sea can also be treated as a field laboratory where rates of reaction mediated by bacteria may be derived from depth profiles.

    Item type: Article
    ID code: 6844
    Keywords: Rhodes Gyre, Black Sea, computer mModelling, rates of reaction, water density, civil engineering, Environmental technology. Sanitary engineering, Engineering (General). Civil engineering (General), Water Science and Technology, Mechanical Engineering, Ocean Engineering, Environmental Engineering, Fluid Flow and Transfer Processes, Earth and Planetary Sciences(all)
    Subjects: Technology > Environmental technology. Sanitary engineering
    Technology > Engineering (General). Civil engineering (General)
    Department: Faculty of Engineering > Civil and Environmental Engineering
    Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 05 Sep 2008
    Last modified: 05 Sep 2014 16:38
    URI: http://strathprints.strath.ac.uk/id/eprint/6844

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