Generation of Bore
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 110, Issue 2
Abstract
Shallow tidal rivers exhibit bore during the propagation of tides of large ranges. The parameters of tidal propagation—the attenuation constant and the phase constant—continually change in a shallow river during a tidal cycle. As a result, the water surface slopes increase during flood and decrease during ebb at corresponding depths of flow. Tidal flux is retained during ebb and the low water is elevated. This is the reason for the formation of “bore” and also the variations of the observed low water levels in different reaches along a shallow river. The height of the bore is obtained from the slope of the water profile just at the turn of the tide from ebb to flood. The veracity of these computations are checked from the observed tidal data of the river Hugli in the state of West Bengal, India.
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References
1.
Dronkers, J. J., “Tidal Computation in Rivers and Coastal Waters,” North Holland Publishing Company, Amsterdam, 1964, p. 278.
2.
Dronkers, J. J., “Tidal Computation in Rivers and Coastal Waters,” North Holland Publishing Company, Amsterdam, 1964, pp. 355–358.
3.
Mazumder, N. C., “Some Studies on the Simulation of a Tidal River by an Electronic Analogue Model,” thesis presented to Calcutta Univ., at Calcutta, India, in 1972, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
4.
Schonfeld, J. C., “Propagation of Tides and Similar Waves,” thesis presented at Delft, in 1951, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 110 • Issue 2 • May 1984
Pages: 159 - 170
Copyright
Copyright © 1984 ASCE.
History
Published online: May 1, 1984
Published in print: May 1984
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