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Current Measurements and Mathematical Modeling in Southern Puget Sound

  • Philip J. W. Roberts
Part of the Marine Science book series (MR, volume 11)

Abstract

Field observations and mathematical modeling were conducted in order to understand the circulation patterns in Nisqually Reach, Southern Puget Sound. Eight continuously recording current meters at four sites and a two-dimensional finite element model were used. Analysis of the current data showed the currents to consist of a first principal component which was essentially parallel to the channel walls. This component was primarily tidal, although both high and low frequency content was apparent. The high frequency content was attributed to fairly small-scale turbulence. The low frequency currents exhibited fluctuations on the order of several days, with the power spectra showing a secondary peak at 2.5 days. These low frequency fluctuations are probably due to wind effects, occurring both locally and non-locally. Typical circulation patterns predicted by the mathematical model are presented. The model reasonably reproduces the tidal currents but not the high and low frequency content. Other limitations of the model are discussed in light of the analysis of the current meter data.

Keywords

Tidal Current Slack Water Tidal Frequency High Frequency Content Adjacent Coastal Water 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Cannon, G. A., and Laird, N. P. 1978. “Variability of Currents and Water Properties From Year-Long Observations in a Fjord Estuary,” in Hydrodynamics of Estuaries and Fjords, J.C.J. Nichoul, Ed., Eiservier.Google Scholar
  2. CH2M Hill. 1978. “DuPont Site Hydrological and Modeling Studies.” Ch2M Hill, Inc., Seattle, Washington.Google Scholar
  3. Elliot, A. J. 1978. “Observations of the Meteorologically Induced Circulation in the Potomac Estuary,” Estuarine and Coastal Marine Science, 6: 285–299.CrossRefGoogle Scholar
  4. Elliot, A. J. and Wang, D. P. 1978. “The Effect of Meteorological Forcing on the Chesapeake Bay: The Coupling Between an Estuarine System and its Adjacent Coastal Waters,” Hydrodynamics of Estuaries and Fjords, J.C.J. Nichoul, Ed., Elservier.Google Scholar
  5. McGary, N., and Lincoln, J. H. 1977. “Tide Prints: Surface Tidal Currents in Puget Sound,” Washington Sea Grant Publication No. WSG 77–1. Seattle: University of Washington Press.Google Scholar
  6. N0AA. 1977. “Tidal Current Tables, Pacific Coast of North America and Asia.”Google Scholar
  7. Smith, N. P. 1977. “Meteorological and Tidal Exchanges Between Corpus Christi Bay, Texas, and the Northwestern Gulf of Mexico,” Estuarine and Coastal Marine Science, 5: 511–520.CrossRefGoogle Scholar
  8. Wang, D. P. and Elliot, A. J. 1978. “Non-Tidal Variability in the Chesapeake Bay and Potomac River: Evidence for Non-Local Forcing,” J. Phys. Oceanography 8: 225–232.CrossRefGoogle Scholar
  9. Weisberg, R. H. and Sturges, W. 1976. “Velocity Observations in the West Passage of Narragansett Bay: A Partially Mixed Estuary,” J. Phys. Oceanography. 6: 345–354.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • Philip J. W. Roberts
    • 1
  1. 1.School of Civil EngineeringGeorgia Institute of TechnologyAtlantaUSA

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