Residence Time: Application to Small Boat Basins
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 109, Issue 4
Abstract
Definitions are presented for transit time, age, flushing time and residence time. Using a continuous exchange model, analytical expressions for the transit time distribution function and the age distribution function are derived for a basin having a constant volume. The residence time for instantaneous as well as continuous dye injections equals the volume of the basin divided by the rate at which new water is added to the basin. Using the tidal prism model it is shown that the normalized residence time for an instantaneous dye injection is a function of three dimensionless parameters. These parameters are: (1) The average basin volume divided by the volume of new water returning on the flood; (2) the fraction of the flood volume that is new water; and (3) the phase of the tide at which the dye is injected. For a continuous dye injection, the normalized residence time is a function of the first two parameters only. Numerical computations show that, to a first approximation, the residence times equal the average basin volume divided by the volume of new water entering during flood with secondary effects introduced by the other parameters.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bolin, B., and Rodhe, H., “A Note on the Concepts of Age Distribution and Transit Time in Natural Reservoirs,” Tellus XXV, 1973, pp. 58–62.
2.
Callaway, R. J., “Flushing Study of South Beach Marina, Oregon,” Journal of the Waterway, Port, Coastal, and Ocean Division, ASCE, Vol. 107, No. WW2, 1981, pp. 47–58.
3.
Dyer, K. R., “Estuaries: A Physical Introduction,” John Wiley and Sons Ltd., London, England, 1973.
4.
van de Kreeke, J., and Larsen, P. W., “Meeting Water Quality Standards in Marinas,” in Urbanization of South Florida, Vol. II, South Florida Section ASCE, Annual Meeting, 1981.
5.
Zimmerman, J. T. F., “Mixing and Flushing of Tidal Embayments in the Western Dutch Wadden Sea. Part I: Distribution of Salinity and Calculation of Mixing Time Scales,” Netherlands Journal of Sea Research, Vol. 10, No. 2, 1976, pp. 149–191.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 109 • Issue 4 • November 1983
Pages: 416 - 428
Copyright
Copyright © 1983 ASCE.
History
Published online: Nov 1, 1983
Published in print: Nov 1983
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.