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Water circulation in the Firth of Forth, Scotland

Published online by Cambridge University Press:  05 December 2011

P. P. G. Dyke
P. P. G. Dyke
Affiliation:
Department of Mathematics and Statistics, Plymouth Polytechnic, Drake Circus, Plymouth PL4 8AA, U.K.
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Synopsis

The Firth of Forth, in terms of physical oceanography, is part of the North Sea. The general circulation pattern in the firth must be regarded as largely speculative. There have been insufficient measurements of insufficient quality, and what evidence exists leads to the view that what circulation there is, is sluggish and varies from season to season and from year to year.

A description is given of the three principal mechanisms that contribute to circulation. Tides, due initially to astronomical forces, manifest themselves in the Firth of Forth through the rise and fall of the adjacent open sea. This rise and fall, periodic in mid ocean, is no longer strictly so in the firth and neither are the tidal currents. The wind-driven currents in the sea are influenced by the earth's rotation. In the Firth of Forth, some of this influence is retained. Naturally, wind-driven currents are larger near the surface. Finally, when water of different densities meets, overturning causes convection currents. All of these effects are present to some extent in the Firth of Forth. In addition, specific account has to be taken of complicated coastal and bottom topography and river outflow. Some attempt to bring together these effects and available measurements is made in this paper. Lastly, several theoretical models are proposed which account for the magnitudes and directions of the observed steady circulation. Mathematical details are given in appendices.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 93 , Issue 3-4: The Natural Environment of the Estuary and Firth of Forth , 1987 , pp. 273 - 284
Copyright
Copyright © Royal Society of Edinburgh 1987

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References

Craig, R. E., 1972. Water movements in the Firth of Forth. Proceedings of the Royal Society of Edinburgh 71B, 131–135.Google Scholar
Davies, A. M., 1985. On determining the profile of steady wind-induced currents. Applied Mathematical Modelling 9, 409–418.CrossRefGoogle Scholar
Dietzel, G. F. L., Glass, A. W., & Van Kleff, P. J., 1976. SLIKTRAK. A computer simulator for the prediction of slick movement by natural means, clean up and potential damages arising from oil spills originating from offshore oil well blowouts. Its development and application to the North Sea. Report EP–47436, Shell International Petroleum, Maatschappij BV, The Netherlands.Google Scholar
Dooley, H. D., & Payne, R., 1978. Variability of currents and water properties in the outer Firth of Forth. Department of Agriculture and Fisheries for Scotland internal report.Google Scholar
Dyke, P. P. G., 1973. Zeros of tidal mass transport under standing waves. Rivista Italiana di Geofisica 22, 353–358.Google Scholar
Dyke, P. P. G., 1980. On the Stokes' drift induced by tidal motions in a wide estuary. Estuarine and Coastal Marine Science 11, 17–25.CrossRefGoogle Scholar
Elliot, A. J., & Wang, Dong-Ping 1978. The effect of meteorological forcing on the Chesapeake Bay; The coupling between an estuarine system and its adjacent coastal waters. In: Hydrodynamics of Estuaries and Fjords, Nihoul, J. C. J., ed. Amsterdam: Elsevier.Google Scholar
Forth Hydrographic Survey 1971. A report for the City and Royal Burgh of Edinburgh, Section 4, 23–28, J. D., and D. M., Watson, Chartered Civil Engineers, 67 Tuffon Street, London SW1.Google Scholar
Harrison, S. J., 1987. Climatic conditions over the estuary and Firth of Forth, Scotland. Proceedings of the Royal Society of Edinburgh 93B, 245–258.Google Scholar
Johns, B., & Dyke, P. P. G., 1971. On the determination of the structure of an offshore tidal stream. Geophysical Journal of the Royal Astronomical Society 23, 287–297.CrossRefGoogle Scholar
John, B., & Dyke, P. P. G., 1972. The structure of the residual flow in an offshore tidal stream. Journal of Physical Oceanography 2, 73–79.2.0.CO;2>CrossRefGoogle Scholar
Lardner, R. W., Lehr, W. J., Fraga, R. J., & Sarhan, M. A., 1987. A model of residual currents and pollutant transport in the Arabian Gulf. Applied Mathematical Modelling (submitted).CrossRefGoogle Scholar
Pingree, R. D., & Maddock, L., 1985. Stokes, Euler and Lagrange aspects of residual tidal transports in the English Channel and the southern bight of the North Sea. Journal of the Marine Biological Association 65, 969–982.CrossRefGoogle Scholar
Smith, D. B., & Parsons, T. V., 1965. Silt movement investigation in the Oxcars spoil ground using radioactive tracers, 1961 and 1964. UKAEA unclassified report AERE–R4980. London: Her Majesty's Stationery Office.Google Scholar
Smith, D. B., Parsons, T. V., & Cloet, R. L., 1965. An investigation using radioactive tracers into the silt movement in an ebb channel, Firth of Forth. UKAEA unclassified report AERE–R5080. London: Her Majesty's Stationery Office.Google Scholar
Smith, D. B., Parsons, T. V., & Warne, P. L., 1967. Further investigation of silt movement in the ebb channel, Firth of Forth, using radioactive tracers, 1966, UKAEA unclassified report AERE–R5523. London: Her Majesty's Stationery Office.Google Scholar
Webb, A. J., & Metcalfe, A. P., 1987. Physical aspects, water movements and modelling studies of the Forth estuary, Scotland. Proceedings of the Royal Society of Edinburgh 93B, 259–272.Google Scholar