Estuaries and Coasts

, Volume 37, Issue 2, pp 508–523 | Cite as

Shoreline Energy and Sea Level Dynamics in Lower Chesapeake Bay: History and Patterns

Article

Abstract

A long-term (1948–2010) shoreward energy history of upper tidal shorelines in lower Chesapeake Bay was developed using a simple calculation of kinetic energy from corresponding wind and tide data. These data were primarily used to determine the likelihood of shoreline energy increases coincident with local sea level rise. Total annual shoreward energy ranged from 620 kJ/m of shoreline in 1950 to 17,785 kJ/m of shoreline in 2009. No clear linear trends are apparent, but mean annual energy shows an increase from 2,732 kJ/m before 1982 to 6,414 kJ/m since then. This increase in mean energy was accompanied by more numerous spikes of comparatively higher annual energy. Shoreward energy delivered to lower Chesapeake Bay’s upper tidal shorelines was enabled by an increasing amount of time per year that tidal height exceeds mean high water, accompanied by increasing heights of tidal anomalies. An index termed the Hydrologic Burden was developed that incorporates the combination of time and tidal height that demonstrates this increasing trend. Although opportunities for greater shoreward energy increased as the Hydrologic Burden increased, and even though there is evidence that greater energy was delivered to the shorelines during the latter time series, energy per hour delivery was shown not to have increased, and may have decreased, due to a steady reduction in average wind speed in lower Chesapeake Bay since the mid-1980s. Energy delivery in lower Chesapeake Bay was primarily from the northeast, and energy delivery over the time series is shown to organize symmetrically around a point between the northeast and north–northeast directions. This is evidence of a self-organizational phenomenon that transcends changes in local wind and tide dynamics.

Keywords

Chesapeake Bay Sea level rise Shoreline energy 

References

  1. Austin, H.M. 2002. Decadal oscillations and regime shifts, a characterization of the Chesapeake Bay marine climate. American Fisheries Society Symposium 32: 155–170.Google Scholar
  2. Boicourt, W.C. 2005. Physical response of Chesapeake Bay to hurricanes moving to the wrong side: Refining the forecasts. In Hurricane Isabel in Perspective, ed. K.G. Sellner, 39–48. CRC, New York.Google Scholar
  3. Boon, J.D. 2012. Evidence of sea level acceleration at U.S. and Canadian tide stations, Atlantic Coast, North America. Journal of Coastal Research 28(6): 1437–1445.CrossRefGoogle Scholar
  4. Boon, J.D., J.M. Brubaker, and D.R. Forrest. 2010. Chesapeake Bay land subsidence and sea level change: An evaluation of past and present trends and future outlook. Special Report No. 425 in Applied Marine Science and Ocean Engineering, Virginia Institute of Marine Science. 72 p.Google Scholar
  5. Bosley, K.T., and K.W. Hess. 2001. Comparison of statistical and model-based hindcasts of subtidal water levels in Chesapeake Bay. Journal of Geophysical Research 106: 16869--16885.Google Scholar
  6. Chang, W., and W.C. Boicourt. 1989. Resonant seiche motion in the Chesapeake Bay. Journal of Geophysical Research 94: 2105–2110.CrossRefGoogle Scholar
  7. Cho, K., H.V. Wang, J. Shen, A. Valle-Levinson, and Y. Teng. 2012. A modeling study on the response of Chesapeake Bay to hurricane events of Floyd and Isabel. Ocean Modelling 49–50: 22–26.CrossRefGoogle Scholar
  8. Dietrich, J.C., M. Zijlema, J.J. Westerink, L.H. Holthuijsen, C. Dawson, R.A. Luettich Jr., R.E. Jensen, J.M. Smith, G.S. Stelling, and G.W. Stone. 2011. Modeling hurricane waves and storm surge using integrally-coupled, scalable computations. Coastal Engineering 58: 45–65.CrossRefGoogle Scholar
  9. Emanuel, K. 2005. Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436: 686–688.CrossRefGoogle Scholar
  10. Gorman, R.M., and C.G. Neilson. 1999. Modelling shallow water wave generation and transformation in an intertidal estuary. Coastal Engineering 36: 197–217.CrossRefGoogle Scholar
  11. Graham. H.E. and D.E. Nunn. 1959. Meteorological considerations pertinent to standard Project Hurricane, Atlantic and Gulf Coasts of the United States. National Hurricane Research Project Report No. 33. U.S. Department of Commerce, Weather Bureau, Washington, D.C.Google Scholar
  12. Guo, X., and A. Valle-Levinson. 2008. Wind effects on the lateral structure of density-driven circulation in Chesapeake Bay. Continental Shelf Research 28: 2450–2471.CrossRefGoogle Scholar
  13. Hsu, S.A., E.A. Meindl, and D.B. Gilhousen. 1994. Determining the power-law wind-profile exponent under near neutral stability conditions at sea. Journal of Applied Meteorology 33: 757–765.CrossRefGoogle Scholar
  14. Johnson, H.K. 1999. Simple expressions for correcting wind speed data for elevation. Coastal Engineering 36: 263–269.CrossRefGoogle Scholar
  15. Knauss, J.A. 1978. Introduction to physical oceanography. Englewood Cliffs: Prentice-Hall, Inc.Google Scholar
  16. Knudsen, M.F., M.-S. Seidenkrantz, B.H. Jacobsen, and A. Kuijpers. 2011. Tracking the Atlantic multidecadal oscillation through the last 8,000 years. Nature Communications. doi:10.1038/ncomms1186.
  17. Li, M., L. Zhong, W.C. Boicourt, S. Zhang, and D. Zhang. 2007. Hurricane-induced destratification and restratification in a partially-mixed estuary. Journal of Marine Research 65: 169–192.Google Scholar
  18. Morgan, P.A., D.M. Burdick, and F.T. Short. 2009. The functions and values of fringing salt marshes in northern New England, USA. Estuaries and Coasts 32: 483–495.CrossRefGoogle Scholar
  19. NOAA. 2010. 2009 Local Climatological Data Annual Summary with Comparative Data, Norfolk Virginia (KORF). National Climate Data Center, Asheville, NC. ISSN 0198-5345.Google Scholar
  20. Peng, M., L. Xie, and L.J. Pietrafesa. 2004. A numerical study of storm surge and inundation in the Croatan-Albemarle-Pamlico Estuary system. Estuarine, Coastal and Shelf Science 59: 121–137.CrossRefGoogle Scholar
  21. Rosen, P.S. 1978. A regional test of the Bruun Rule on shoreline erosion. Marine Geology 26: M7–M16.CrossRefGoogle Scholar
  22. Sallenger Jr., A.H., K.S. Doran, and P.A. Howd. 2012. Hotspot of accelerated sea-level rise on the Atlantic coast of North America. Nature Climate Change 2: 1–5.CrossRefGoogle Scholar
  23. Saville, T. 1954. "The Effect of Fetch Width on Wave Generation," Technical Memorandum 70. Washington, DC: Beach Erosion Board.Google Scholar
  24. Shen, J., and W. Gong. 2009. Influence of model domain size, wind directions and Ekman transport on storm surge development inside the Chesapeake Bay: A case study of extratropical cyclone Ernesto, 2006. Journal of Marine Systems 75: 198–215.CrossRefGoogle Scholar
  25. Shen, J., H. Wang, M. Sisson, and W. Gong. 2006. Storm tide simulation in the Chesapeake Bay using an unstructured grid model. Estuarine, Coastal and Shelf Science 68: 1–16.CrossRefGoogle Scholar
  26. Stive, M.J.F., S.G.J. Aarninkhof, L. Hamm, H. Hanson, M. Larson, K.M. Wijnberg, R.J. Nicholls, and M. Capobianco. 2002. Variability of shore and shoreline evolution. Coastal Engineering 47: 211–235.CrossRefGoogle Scholar
  27. U.S. Army Corps of Engineers. 1984. Shore protection manual, vol. I. Vicksburg: Coastal Engineering Research Center.Google Scholar
  28. Valle-Levinson, A., K. Wong, and K.T. Bosley. 2002. Response of the lower Chesapeake Bay to forcing from Hurricane Floyd. Continental Shelf Research 22: 1715–1729.CrossRefGoogle Scholar
  29. Villa-Concejo, A., M.G. Hughes, A.D. Short, and R. Ranasinghe. 2010. Estuarine shoreline processes in a dynamic low-energy system. Ocean Dynamics 60: 285–298.CrossRefGoogle Scholar
  30. Webster, P.J., G.J. Holland, J.A. Curry, and H. Chang. 2005. Changes in tropical cyclone number, duration, and intensity in a warming environment. Science 309: 1844–1846.CrossRefGoogle Scholar
  31. Weisberg, R.H., and L. Zheng. 2006. Hurricane storm surge simulations for Tampa Bay. Estuaries and Coasts 29(6A): 899–913.CrossRefGoogle Scholar
  32. Wong, K.A., and J.E. Moses-Hall. 1998. On the relative importance of the remote and local wind effects to the subtidal variability in a coastal plain estuary. Journal of Geophysical Research 103(c9): 18,393–18,404.CrossRefGoogle Scholar
  33. Yang, S.L., B.W. Shi, T.J. Bouma, T. Ysebaert, and X.X. Luo. 2012. Wave attenuation at a salt marsh margin: a case study of an exposed coast on the Yangtze Estuary. Estuaries and Coasts 35: 169–182.CrossRefGoogle Scholar
  34. Yin, J., M.E. Schlesinger, and R.J. Stouffer. 2009. Model projections of rapid sea-level rise on the northeast coast of the United States. Nature Geoscience 2: 262–266.CrossRefGoogle Scholar
  35. Zhong, L., and M. Li. 2006. Tidal energy fluxes and dissipation in the Chesapeake Bay. Continental Shelf Research 26: 752–770.CrossRefGoogle Scholar
  36. Zhong, L., M. Li, and M.G.G. Foreman. 2008. Resonance and sea level variability in Chesapeake Bay. Continental Shelf Research 28: 2565–2573.CrossRefGoogle Scholar
  37. Zhong, L., M. Li, and D. Zhang. 2010. How do uncertainties in hurricane model forecasts affect storm surge predictions in a semi-enclosed bay? Estuarine, Coastal and Shelf Science 90: 61–72.CrossRefGoogle Scholar

Copyright information

© Coastal and Estuarine Research Federation 2013

Authors and Affiliations

  1. 1.Office of Research and Advisory Services, Virginia Institute of Marine ScienceCollege of William and MaryGloucester PointUSA

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