Influence of Tidal Inlets on Salinity in Estuaries

by N. Jothi Shankar, (A.M.ASCE), Lect.; Hydr. Engrg. Lab., Indian Inst. of Tech., Madras, India,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1975, Vol. 101, Issue 4, Pg. 369-383

Document Type: Journal Paper

Abstract: The paper outlines mathematical hydrodynamic and salinity transport models applicable to the analysis of the effects of tidal inlets on shallow irregularly shaped estuaries typical of the Gulf Coast of the United States of America. The practical utility of these models has been developed and demonstrated for the simulation of salinity distributions under well-mixed water conditions for two estuaries on the Gulf Coast. Specifically, Matagorda Bay, Texas, is used to verify the salinity distribution model. Comparison between the computed concentrations and ground truth data is found to be excellent. Galveston Bay, Texas, is used to demonstrate the effects of a tidal inlet on salinity distribution. Comparison with the existing data indicate good qualitative agreement. The effects of tidal inlet are found to be mainly localized for the case considered.

Subject Headings: Salinity | Tides | Inlets (waterway) | Estuaries | Hydrologic models | Mathematical models | Water supply systems | Gulfs | North America | United States | Texas

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