Velocity profiles in a salt marsh canopy |
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| Authors: | Z Shi J S Pethick F Burd B Murphy |
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| Institution: | (1) Department of Naval Architecture & Ocean Engineering, Shanghai Jiao Tong University, 1954 Hua Shan Road, 200030 Shanghai, China;(2) Institute of Estuarine & Coastal Research, University of Hull, HU6 7RX Hull, UK |
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| Abstract: | Flow velocity profiles, measured in aSpartina anglica canopy in a laboratory flume, change with the location of measurement and plant stem density. The shear velocity above the canopy is larger than that within the canopy. The reduction ofu
* within the canopy will favor the deposition of cohesive sediment. The reducedu
* and flow turbulence within the canopy can enhance particle flocculation and settling velocity. The canopy exerts a strong influence on the concentration, settling velocity of the flocs, and deposition rate of the suspended sediment through effects on bed shear stress and turbulence of flow within the canopy. |
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