Grain size dependency in the occurrence of sand waves


Veen, Hennie Henriët van der and Hulscher, Suzanne Jacqueline Marie Hélène and Knaapen, Michiel Adrianus Frederik (2006) Grain size dependency in the occurrence of sand waves. Ocean dynamics, 56 (3-4). pp. 228-234. ISSN 1616-7341

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Abstract:Sandy shallow seas, like the North Sea, are very dynamic. Several morphological features are present on the bed, from small ripples to sand waves and large tidal sandbanks. The larger patterns induce significant depth variations that have an impact on human activities taking place in this area. Therefore, it is important to know where these large-scale features occur, what their natural behaviour is and how they interact with human activities. Here, we extend earlier research that compares the results of an idealized model of large-scale seabed patterns with data of seabed patterns in the North Sea. The idealized model is extended with a grain size dependency. The adaptations lead to more accurate predictions of the occurrence of large-scale bed forms in the North Sea. Therefore, grain size dependency and, in particular, critical shear stress are important to explain the occurrence of sand waves and sandbanks in the North Sea.
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Copyright:© 2006 Springer
Engineering Technology (CTW)
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