Sediment sorting along tidal sand waves: a comparison between field observations and theoretical predictions
Van Oyen, T.; Blondeaux, P.; Van den Eynde, D. (2013). Sediment sorting along tidal sand waves: a comparison between field observations and theoretical predictions. Cont. Shelf Res. 63: 23-33. dx.doi.org/10.1016/j.csr.2013.04.005
A site-by-site comparison between field observations and theoretical predictions of sediment sorting patterns along tidal sand waves is performed for ten locations in the North Sea. At each site, the observed grain size distribution along the bottom topography and the geometry of the bed forms is described in detail and the procedure used to obtain the model parameters is summarized. The model appears to accurately describe the wavelength of the observed sand waves for the majority of the locations; still providing a reliable estimate for the other sites. In addition, it is found that for seven out of the ten locations, the qualitative sorting process provided by the model agrees with the observed grain size distribution. A discussion of the site-by-site comparison is provided which, taking into account uncertainties in the field data, indicates that the model grasps the major part of the key processes controlling the phenomenon.
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