Practical Application of Theory for Tidal‐Intrusion Fronts
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116, Issue 3
Abstract
A simple theoretical model was applied to interpret the characteristics of an estuarine front that forms at the early stage of each flood tide off Newport News Point, in the lower James River, Virginia. The observed depths of diving of denser water at the front, and the upriver movement of the front are explained theoretically. The construction of a man‐made island to facilitate port expansion was proposed for downriver of the front. Its effect on the flood current approaching the front is quantified with a vertically averaged two‐dimensional numerical model. The theory is used to predict the impact of the proposed island on the frontal characteristics, particularly with respect to the entrainment and transport of oyster larvae to the lower portion of the water column, where net transport is upriver toward seed‐oyster beds. Applications of the front theory, results of the numerical model, and oyster‐larvae studies indicate that the transport capacity of the front would be markedly reduced by island construction at the proposed sites.
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References
1.
Bowman, M. J., and Esaias, W. (1977). Oceanic fronts in coastal processes. Proceedings of a workshop. Springer‐Verlag, Berlin, Germany.
2.
Byrne, R. J., et al. (1987). “Newport Island: An evaluation of potential impacts on marine resources of the lower James River and Hampton Roads.” Appl. Marine Sci. and Ocean Engrg. No. 283, Virginia Inst. of Marine Sci., Gloucester Point, Va.
3.
Chen, H. S. (1979). “A two‐dimensional hydrodynamic and biogeochemical water quality model and its application to the lower James River.” Appl. Marine Sci. and Ocean Engrg. No. 183, Virginia Inst. of Marine Sci., Gloucester Point, Va.
4.
Cronin, W. B. (1971). “Volumetric, area and tidal statistics of Chesapeake Bay and its tributaries.” Special Report No. 20, Chesapeake Bay Institute, Johns Hopkins Univ., Baltimore, Md.
5.
Fang, C. S., et al. (1972). “Physical and geological studies of the proposed bridge‐tunnel crossing of Hampton Roads and Craney Island.” Appl. Marine Sci. and Ocean Engrg. No. 24, Virginia Inst. of Marine Sci., Gloucester Point, Va.
6.
Fang, C. S., et al. (1979). “James River hydraulic model study with respect to proposed third bridge‐tunnel causeway in Hampton Roads.” Appl. Marine Sci. and Ocean Engrg. No. 212, Virginia Inst. of Marine Sci., Gloucester Point, Va.
7.
Garvine, R. W., and Monk, J. D. (1974). “Frontal structure of a river plume.” J. Geophysical Res., 79(15), 2251–2259.
8.
Haven, D. S., and Whitcomb, J. P. (1983). “The origin and extent of oyster reefs in the James River, Virginia.” J. Shellfish Res., 3(2), 141–151.
9.
Haven, D. S., and Whitcomb, J. P. (1986). “The public oyster bottoms in Virginia: An overview of their size, location and productivity.” Amer. Malacological Bulletin, Special Ed. No. 3, 17–23.
10.
Heltzel, S. B. (1988). “I‐664 bridge‐tunnel study, Virginia: Sedimentation and circulation investigation.” Tech. Report HL‐88‐25, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss.
11.
Huzzey, L. M. (1982). “The dynamics of a bathymetrically arrested estuarine front.” Estuarine Coastal and Shelf Sci., 15(15), 537–552.
12.
Huzzey, L. M., and Brubaker, J. M., (1988). “The formation of longitudinal fronts in a coastal plain estuary.” J. Geophysical Res., 93 (C2), 1329–1334.
13.
Kuo, A. Y., et al. (1988). “Vertical transport across an estuary front. Physical processes in estuary, J. Dronkers and W. van Leussen, eds., Springer‐Verlag, Berlin, Germany, 93–109.
14.
Nunes, R. A., and Simpson, J. H. (1985). “Axial convergence in a well‐mixed estuary.” Estuarine Coastal and Shelf Sci., 20(5), 637–649.
15.
Richards, D. R., and Morton, M. R. (1983). “Norfolk Harbor and channel deepening study, report 1, physical model results.” Tech. Report. HL‐83‐13, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss.
16.
Ruzecki, E. P., and Hargis, W. J., Jr. (1988). “Interaction between circulation of the estuary of the James River and transport of oyster larvae.” Estuarine Circulation, B. J. Neilson, A. Y. Kuo, and J. M. Brubaker, eds., The Humana Press, Clifton, N.J., 255–278.
17.
Simpson, J. H., and Nunes, R. A. (1981). “The tidal intrusion front: An estuarine convergence zone.” Estuarine Coastal and Shelf Sci., 13(3), 257–266.
18.
Turrell, W. R., and Simpson, J. H. (1988). “The measurement and modelling of axial convergence in shallow well‐mixed estuaries.” Physical processes in estuaries, J. Dronkers and W. van Leussen, eds., Springer‐Verlag, Berlin, Germany, 130–145.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 116 • Issue 3 • May 1990
Pages: 341 - 361
Copyright
Copyright © 1990 ASCE.
History
Published online: May 1, 1990
Published in print: May 1990
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