Parameters affecting fine-grained suspended sediment concentrations in a shallow micro-tidal estuary,Ho Bugt,Denmark |
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| Institution: | 1. Département de géologie et de génie géologique, Université Laval, Quebec, QC, G1V0A6, Canada;2. Geological Survey of Canada, Ottawa, ON, K1A0E8, Canada;3. Department of Geological Sciences and Geological Engineering, Queen''s University, Kingston, ON, K7L3N6, Canada;1. School of Ocean Engineering and Technology Sciences, Sun Yat-Sen University, Guangzhou 510275, China;2. Southern Marine Science and Engineering, Guangdong Laboratory, Zhuhai 519082, China;3. Guangdong Province Engineering Research Center of Coasts, Islands and Reefs, Guangzhou 510275, China;4. Hydraulics Laboratory, Civil Engineering Department Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 (Blok 5), Gent B-9000, Belgium |
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| Abstract: | Many shallow estuarine environments contain considerable quantities of fine-grained sediments. It is difficult, however, to determine theoretically the concentration and transport of fine-grained sediments in such environments, because the fine particles flocculate and because the suspended sediment concentration is dependent on a number of different parameters. The most important of which are: (1) bottom shear stress (current velocity), (2) wind speed and direction, and (3) salinity. In this study the relative importance of these parameters is evaluated in relation to a shallow micro-tidal environment, Ho Bugt, Denmark. Furthermore, a mathematical model explaining the variation in the concentration of fine-grained suspended sediments at a station within this area was created and calibrated to measurements of wind speed and direction, salinity and tidal current velocity. The model describes about 80% of the variance of the suspended sediment concentration at the site of observation. |
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