Assessing Factors Affecting the Thermal Properties of a Passive Thermal Refuge Using Three-Dimensional Hydrodynamic Flow and Transport Modeling
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 139, Issue 3
Abstract
Everglades restoration activities may cause changes to temperature and salinity stratification at the Port of the Islands (POI) marina, which could affect its suitability as a cold weather refuge for manatees. To better understand how the Picayune Strand Restoration Project (PSRP) may alter this important resource in Collier County in southwestern Florida, the USGS has developed a three-dimensional hydrodynamic model for the marina and canal system at POI. Empirical data suggest that manatees aggregate at the site during winter because of thermal inversions that provide warmer water near the bottom that appears to only occur in the presence of salinity stratification. To study these phenomena, the environmental fluid dynamics code simulator was used to represent temperature and salinity transport within POI. Boundary inputs were generated using a larger two-dimensional model constructed with the flow and transport in a linked overland-aquifer density-dependent system simulator. Model results for a representative winter period match observed trends in salinity and temperature fluctuations and produce temperature inversions similar to observed values. Modified boundary conditions, representing proposed PSRP alterations, were also tested to examine the possible effect on the salinity stratification and temperature inversion within POI. Results show that during some periods, salinity stratification is reduced resulting in a subsequent reduction in temperature inversion compared with the existing conditions simulation. This may have an effect on POI’s suitability as a passive thermal refuge for manatees and other temperature-sensitive species. Additional testing was completed to determine the important physical relationships affecting POI’s suitability as a refuge.
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References
Bales, J. D., Tomlinson, S. A., and Tillis, G. (2006). U.S. geological survey professional paper on flow and salt transport in the Suwannee River Estuary, Florida, 1999–2000, analysis of data and three-dimensional simulations, Reston, VA, Vol. 1656-B.
Galperin, B., Kantha, L. H., Hassid, S., and Rosati, A. (1988). “A quasi-equilibrium turbulent energy model for geophysical flows.” J. Atmos. Sci., 45(1), 55–62.
Hamrick, J. M. (1992a). “Estuarine environmental impact assessment using a three-dimensional circulation and transport model.” Proc., 2nd Int. Conf., Estuarine and Coastal Modeling, M. L. Spaulding, et al., eds., ASCE, Reston, VA, 292–303.
Hamrick, J. M. (1992b). “A three-dimensional environmental fluid dynamics computer code: Theoretical and computational aspects.” Special Rep. 317, College of William and Mary, Virginia Institute of Marine Science, Gloucester Point, VA.
Hamrick, J. M. (1994). “Linking hydrodynamic and biogeochemical transport models for estuarine and coastal waters.” Proc., 3rd Int. Conf., Estuarine and Coastal Modeling, M. L. Spaulding et al., eds., American Society of Civil Engineers, 591–608.
Jin, K.-R., Hamrick, J. H., and Tisdale, T. (2000). “Application of three-dimensional hydrodynamic model for Lake Okeechobee.” J. Hydraul. Eng., 126(10), 758–771.
Langtimm, C. A., et al. (2009). “Integrated science: Florida manatees and Everglades hydrology.” USGS Fact Sheet 2009-3002, Reston, VA.
Moustafa, M. Z., and Hamrick, J. M. (1994). “Modeling circulation and salinity transport in the Indian River Lagoon.” Proc., 3rd Int. Conf., Estuarine and Coastal Modeling, M. L. Spaulding et al., eds., ASCE, Reston, VA, 381–395.
Stith, B. M., et al. (2011). “Temperature inverted haloclines provide winter warm-water refugia for manatees in southwest Florida.” Estuaries Coasts, 34(1), 106–119.
Swain, E. D., and Decker, J. D. (2009). “Development, testing, and application of a coupled hydrodynamic surface-water/ground-water model (FTLOADDS) with heat and salinity transport in the Ten-Thousand Islands/Picayune Strand Restoration Project area, Florida.” USGS Scientific Investigations Rep. 2009-5146, Reston, VA.
U.S. Army Corps of Engineers. (2004). “Comprehensive Everglades restoration plan, Picayune Strand restoration, final integrated project implementation report and environmental impact statement.” 〈http://www.evergladesplan.org/pm/projects/docs_30_sgge_pir_final.aspx〉 (May 21, 2008).
Wang, J. D., Swain, E. D., Wolfert, M. A., Langevin, C. D., James, D. E., and Telis, P. A. (2007). “Applications of flow and transport in a linked overland/aquifer density dependent system (FTLOADDS) to simulate flow, salinity, and surface-water stage in the Southern Everglades, Florida.” USGS Scientific Investigations Rep. 2007-5010, Reston, VA.
Watson, I., and Burnett, A. D. (1995). Hydrology: An environmental approach, CRC Press, Boca Raton, FL.
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© 2013 American Society of Civil Engineers.
History
Received: Oct 26, 2011
Accepted: May 14, 2012
Published online: May 17, 2012
Published in print: May 1, 2013
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