Author: William Morse Watts
Publisher:
ISBN:
Category : Lummi Bay (Wash.)
Languages : en
Pages : 0
Book Description
Tidal-flushing of the proposed Lummi Bay Marina was studied using a physical model. The model was distinct from those of other regional marinas in that it included a berm around the edges, depth contours, sloping walls, and simulated mixed-semidiurnal tides. Spectrophotometric measurements of absorbance of dye in water resulted in the calculation of exchange-coefficients and flushing efficiency. Exchange coefficients in the physical model increased with increasing tidal range, suggesting a tendency for decreased water quality during smaller tides. Exchange was best in spring-tide simulations, but water tended to stagnate during the smaller ebb and flood cycles in both spring and neap simulations. Water quality in the proposed Lummi Bay Marina will probably also vary with tidal range and may be vulnerable to depletion of dissolved oxygen and increased temperature during periods of smaller tidal exchange. Circulation gyres forming in the model contained less-mixed water toward their centers than at their edges. The primary counterclockwise-gyre retained enough momentum to remain intact throughout a tidal cycle. Neap tides did not induce as strong a circulation of water as did spring tides. Secondary clockwise-gyres formed in the north and south corners of the model over the berm. Those gyres were destroyed each time the berm was exposed, causing short-term water-quality problems. In the event of construction of the marina, the problem of tidal-flushing should be studied using a field approach to verify the results of this study.
Tidal-flushing Characteristics of the Proposed Lummi Bay Marina, Whatcom County, Washington
Author: William Morse Watts
Publisher:
ISBN:
Category : Lummi Bay (Wash.)
Languages : en
Pages : 0
Book Description
Tidal-flushing of the proposed Lummi Bay Marina was studied using a physical model. The model was distinct from those of other regional marinas in that it included a berm around the edges, depth contours, sloping walls, and simulated mixed-semidiurnal tides. Spectrophotometric measurements of absorbance of dye in water resulted in the calculation of exchange-coefficients and flushing efficiency. Exchange coefficients in the physical model increased with increasing tidal range, suggesting a tendency for decreased water quality during smaller tides. Exchange was best in spring-tide simulations, but water tended to stagnate during the smaller ebb and flood cycles in both spring and neap simulations. Water quality in the proposed Lummi Bay Marina will probably also vary with tidal range and may be vulnerable to depletion of dissolved oxygen and increased temperature during periods of smaller tidal exchange. Circulation gyres forming in the model contained less-mixed water toward their centers than at their edges. The primary counterclockwise-gyre retained enough momentum to remain intact throughout a tidal cycle. Neap tides did not induce as strong a circulation of water as did spring tides. Secondary clockwise-gyres formed in the north and south corners of the model over the berm. Those gyres were destroyed each time the berm was exposed, causing short-term water-quality problems. In the event of construction of the marina, the problem of tidal-flushing should be studied using a field approach to verify the results of this study.
Publisher:
ISBN:
Category : Lummi Bay (Wash.)
Languages : en
Pages : 0
Book Description
Tidal-flushing of the proposed Lummi Bay Marina was studied using a physical model. The model was distinct from those of other regional marinas in that it included a berm around the edges, depth contours, sloping walls, and simulated mixed-semidiurnal tides. Spectrophotometric measurements of absorbance of dye in water resulted in the calculation of exchange-coefficients and flushing efficiency. Exchange coefficients in the physical model increased with increasing tidal range, suggesting a tendency for decreased water quality during smaller tides. Exchange was best in spring-tide simulations, but water tended to stagnate during the smaller ebb and flood cycles in both spring and neap simulations. Water quality in the proposed Lummi Bay Marina will probably also vary with tidal range and may be vulnerable to depletion of dissolved oxygen and increased temperature during periods of smaller tidal exchange. Circulation gyres forming in the model contained less-mixed water toward their centers than at their edges. The primary counterclockwise-gyre retained enough momentum to remain intact throughout a tidal cycle. Neap tides did not induce as strong a circulation of water as did spring tides. Secondary clockwise-gyres formed in the north and south corners of the model over the berm. Those gyres were destroyed each time the berm was exposed, causing short-term water-quality problems. In the event of construction of the marina, the problem of tidal-flushing should be studied using a field approach to verify the results of this study.
Lummi Bay Marina Navigation Improvements, Whatcom County
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 400
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 400
Book Description
Tidal Circulation and Flushing in Five Western Washington Marinas
Author: Ronald E. Nece
Publisher:
ISBN:
Category : Marinas
Languages : en
Pages : 118
Book Description
Publisher:
ISBN:
Category : Marinas
Languages : en
Pages : 118
Book Description
Masters Theses in the Pure and Applied Sciences
Author: W. H. Shafer
Publisher: Plenum Publishing Corporation
ISBN: 9780306443480
Category : Education
Languages : en
Pages : 392
Book Description
Masters Theses Listed by Discipline: Aerospace Engineering. Agricultural Economics, Sciences and Engineering. Architechtural Engineering and Urban Planning. Astronomy. Astrophysics. Ceramic Engineering. Communications Engineering and Computer Science. Cryogenic Engineering. Electrical Engineering. Engineering Mechanics. Engineering Physics. Engineering Science. Fuels, Combustion, and Air Pollution. General and Environmental Engineering. Geochemistry and Soil Science. Geological Sciences and Geophysical Engineering. Geology and Earth Science. Geophysics. Industrial Engineering. Marine and Ocean Engineering. Materials Science and Engineering. Mechanical Engineering and Bioengineering. Metallurgy. Meteorology and Atmospheric Science. 17 additional disciplines. Index.
Publisher: Plenum Publishing Corporation
ISBN: 9780306443480
Category : Education
Languages : en
Pages : 392
Book Description
Masters Theses Listed by Discipline: Aerospace Engineering. Agricultural Economics, Sciences and Engineering. Architechtural Engineering and Urban Planning. Astronomy. Astrophysics. Ceramic Engineering. Communications Engineering and Computer Science. Cryogenic Engineering. Electrical Engineering. Engineering Mechanics. Engineering Physics. Engineering Science. Fuels, Combustion, and Air Pollution. General and Environmental Engineering. Geochemistry and Soil Science. Geological Sciences and Geophysical Engineering. Geology and Earth Science. Geophysics. Industrial Engineering. Marine and Ocean Engineering. Materials Science and Engineering. Mechanical Engineering and Bioengineering. Metallurgy. Meteorology and Atmospheric Science. 17 additional disciplines. Index.
Washington Geologic Newsletter
Author: Washington (State). Division of Geology and Earth Resources
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 78
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 78
Book Description
Lummi Bay Marina, Whatcom County, Washington
Author: United States. Army. Corps of Engineers
Publisher:
ISBN:
Category : Environmental impact statements
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Environmental impact statements
Languages : en
Pages :
Book Description
Lummi Bay Marina, Whatcom County, Washington
Author: United States. Army. Corps of Engineers. Seattle District
Publisher:
ISBN:
Category : Environmental impact analysis
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Environmental impact analysis
Languages : en
Pages :
Book Description
Water Quality and Tidal Flushing Characteristics of Three Small Boat Basins; Des Moines Marina, Edmonds Harbor, and Newport Shores
Author: Charles Ryan Knoll
Publisher:
ISBN:
Category : Marinas
Languages : en
Pages : 238
Book Description
Publisher:
ISBN:
Category : Marinas
Languages : en
Pages : 238
Book Description
Open-file Report
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 56
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 56
Book Description
Bulletin - Division of Geology and Earth Resources
Author: Washington (State). Division of Geology and Earth Resources
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 736
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 736
Book Description