Exchange of sediment between beaches and bars after a beach nourishment
Schwarzer, K. (1994). Exchange of sediment between beaches and bars after a beach nourishment, in: Moissec, A. Proceedings of the International meeting (Nantes, 17-20 octobre 1991), Special Issue Coastal Protection, International Experiences and Prospect. Cahiers Nantais, 41-42(Spec. Iss.): pp. 126-133
In: Moissec, A. (1994). Proceedings of the International meeting (Nantes, 17-20 octobre 1991), Special Issue Coastal Protection, International Experiences and Prospect. Cahiers Nantais, 41-42(Spec. Iss.). Centre Nantais de Recherche pour l'Amenagement Regional: Nantes. 236 pp., more
In: Cahiers Nantais. Igarun: Nantes. ISSN 0755-9232, more
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| Author keywords |
Nearshore sandy environments, offshore bars, sediment transport, rip current, artificial tracer, beach nourishment, coastal monitoring |
| Abstract |
Shortly after the completion of the middle section of a 14 km long dyke protecting a lowland (Kiel Outer Fjord/Baltic Sea) erosion processes increased in the nearshore sandy area. That's why several episodes of beach nourishment were carried out along with a sedimentological research program to determine the incorporation of artificially supplied material into the natural sediment cycle and to estimate the response of the nearshore environment due to such a measure. Considering these aspects sedimentological mapping and an experiment with a tracer (luminophores) were conducted. It could be seen that fine sand which mainly builds up the nearshore bars and which was the main component of the fill material was completely removed after one year and the former conditions developed again. Additionally it became obvious that during storm conditions sediment transport from the beach towards the offshore occurs in very narrow tracks with different velocities for single grain size spectra. |
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