# A Hydraulic Model for Multiple-Bay-Inlet Systems on Barrier Islands

- 241 Downloads
- 1 Citations

## Abstract

In this study, we apply the traditional hydraulic engineering approach to model an inter-connected multiple-bay-inlet system that can represent the Great South Bay-Moriches Bay system on Long Island, New York. We show that the hydraulic model captures the essential physics of the system, despite its apparent simplicity in mathematical expressions. The model gives good estimates of bay tidal transmissions, including the tidal ranges, phase lags, and the flood-ebb asymmetry behavior in Moriches Bay. The hydraulic modeling results compare well with the simulations from a 3D coastal ocean circulation model, in particular the changes in bay tides due to the breach of Old Inlet by Hurricane Sandy. The modeled inlet discharge rates are in good agreement with the observations.

## Keywords

Inlet discharges Bay water levels Lumped-parameter model Great South Bay## Notes

### Acknowledgements

Materials presented here were produced during the period when JY was supported by US National Science Foundation (Grants CBET-0845957). This is gratefully acknowledged. We would like to thank Dr. Claudia Hinrichs who has kindly provided the location map figure 1 and FVCOM predictions figure 6, as well as useful discussions.

## References

- Brouwer, R.L. 2006.
*Equilibrium and stability of a double inlet system*. Netherlands: Msc. Thesis, Delft University of Technology.Google Scholar - Brouwer, R.L. 2013.
*Cross-sectional stability of double inlet systems*. Netherlands: PhD. Thesis, Delft University of Technology.Google Scholar - Brown, E.I. 1932. Flow of water in tidal canals.
*Proceedings of ASCE*96: 747–834.Google Scholar - Conley, D.C. 1999. Observations on the impact of a developing inlet in a bar built estuary.
*Continental Shelf Research*19: 1733–1754.CrossRefGoogle Scholar - Conley, D.C. 2000. Numerical modeling of Fire Island storm breach impacts upon circulation and water quality of Great South Bay, NY. Marine Science Research Center (MSRC) Special Report 124. Reference No 00-01. SUNY Digital Repository at Stony Brook University.Google Scholar
- Dean, R.G., and R.A. Dalrymple. 2002. Coastal processes with engineering applications. Cambridge University Press.Google Scholar
- de Swart, H.E., and J.T.F. Zimmerman. 2009. Morphodynamics of tidal inlet systems.
*Annual Review of Fluid Mechanics*41: 203–229.CrossRefGoogle Scholar - de Swart, HE, and ND Volp. 2012. Effects of hypsometry on the morphodynamic stability of single and multiple tidal inlet systems.
*Journal of Sea Research*74: 35–44.CrossRefGoogle Scholar - DiLorenzo, J.L. 1986.
*The overtide and filtering response of inlet/bay systems*. State University of New York at Stony Brook: PhD Thesis.Google Scholar - Escoffier, F.F. 1940. The stability of tidal inlets.
*Shore and Beach*8(4): 114–115.Google Scholar - Herman, A. 2007. Numerical modelling of water transport processes in partially-connected tidal basins.
*Coastal Engineering*54: 297–320.CrossRefGoogle Scholar - Jain, M., A.J. Mehta, J. van de Kreeke, and M.R. Dombrowski. 2004. Observations on the stability of St. Andrew Bay inlets in Florida.
*Journal of Coastal Research*20(3): 913–919.CrossRefGoogle Scholar - Kaufman, Z., J. Lively, and E.J. Carpenter. 1984. Uptake of nitrogenous nutrients by phytoplankton in a barrier island estuary: Great South Bay, New York.
*Estuarine, Coastal and Shelf Science*17: 483–493.CrossRefGoogle Scholar - Keulegan, G.H. 1967.
*Tidal flow in entrances, water-level fluctuations of basins in communication with seas*. Vicksburg, MS: Technical Bulletin No. 14, Committee On Tidal Hydraulics, U.S. Army Engineer Waterways Experiment Station.Google Scholar - Kraus, N.C., G.A. Zarillo, and J.F. Tavolaro. 2003. Hypothetical relocation of Fire Island Inlet, New York. In: Proceedings coastal sediments ’03, World Scientific, CD-ROM, 14.Google Scholar
- Lively, J., Z. Kaufman, and E.J. Carpenter. 1983. Phytoplankton ecology of a barrier island estuary: Great South bay, New York.
*Estuarine, Coastal and Shelf Science*16: 51–68.CrossRefGoogle Scholar - Maas, L.M.R. 1997. On the nonlinear Helmholtz response of almost-enclosed tidal basin with sloping bottoms.
*Journal of Fluid Mechanics*349: 361–380.CrossRefGoogle Scholar - Metha, A.J., and P.B. Joshi. 1988. Tidal inlet hydraulics.
*Journal of Hydraulic Engineering*114 (11): 1321–1338.CrossRefGoogle Scholar - Mandelli, E.F., P.R. Burkholder, T.E. Doheny, and R. Brody. 1970. Studies of primary productivity in coastal waters of southern Long Island, New York.
*Marine Biology*7: 153–160.CrossRefGoogle Scholar - Roos, P.C., H.M. Schuttelaars, and R.L. Brouwer. 2013. Observations of barrier island length explained using an exploratory morphodynamic model.
*Geophysical Research Letters*349: 361–380.Google Scholar - U. S. Army Corps of Engineers. 2002. Coastal Engineering Manual. EM 1110-2-1100 (Part II), Chapter 6. USACE Publications.Google Scholar
- van de Kreeke, J. 1990a. Stability analysis of two-inlet bay system.
*Coastal Engineering*14: 481–497.CrossRefGoogle Scholar - van de Kreeke, J. 1990b. Can multiple tidal inlets be stable?.
*Estuarine, Coastal and Shelf Science*30: 261–273.CrossRefGoogle Scholar - van de Kreeke, J. 1988. Hydrodynamics of tidal inlets. In: Hydrodynamics and sediment dynamics of tidal inlets, eds. D.G. Aubrey and L. Weishar, 1–23. New York, Springer.Google Scholar
- van de Kreeke, J., R.L. Brouwer, T.J. Zitman, and H.M. Schuttelaars. 2008. The effect of a topographic high on the morphological stability of a two-inlet bay system.
*Coastal Engineering*55: 319–332.CrossRefGoogle Scholar - Weaver, S., and H. Hirschfield. 1976. Delineation of two plankton communities form one sampling site (Fire Island Inlet, NY).
*Marine Biology*34: 273–283.CrossRefGoogle Scholar