Time and spatial variability of sediment grading in the surfzone of a large scale nourishment

Abstract

ABSTRACT Huisman, B.J.A., Sirks, E.E., van der Valk, L., Walstra, D.J.R., 2014. Time and spatial variability of sediment gradingin the surfzone of a large scale nourishment. In: Green, A.N. and Cooper, J.A.G. (eds.), Proceedings 13th International Coastal Symposium (Durban, South Africa), Journal of Coastal Research, Special Issue No. 70, pp. 127–132–134, ISSN 0749-0208. Temporal and spatial variations in sediment gradation in the surfzone were investigated for a large scale nourishment (Sand Motor) at the Dutch coast (~ 21.5 million m3 sand). This nourishment provides an excellent opportunity to investigate the effect of hydrodynamic conditions on the spatial and temporal development of sediment grading. A strong point of the Sand Motor is that it has a well-known initial sediment composition. Measurements of the sediment grading at the Sand Motor were carried out during and after its construction to investigate the sorting process. Samples were taken for six cross-shore rays at ten depth contours (from ...