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Acoustic teledetection of shelf bedforms and their meaning for the sediment dynamics
Lanckneus, J.; De Moor, G.; De Schaepmeester, G.; Libeer, L. (1989). Acoustic teledetection of shelf bedforms and their meaning for the sediment dynamics, in: Pichot, G. (Ed.) Progress in Belgian Oceanographic Research 1989: proceedings of the North Sea Symposium held in Ghent, 14 February 1989. pp. 147-163
In: Pichot, G. (Ed.) (1989). Progress in Belgian Oceanographic Research 1989: Proceedings of the North Sea Symposium held in Ghent, 14 February 1989. Management Unit of the Mathematical Model of the North Sea and Scheldt Estuary: Brussel. 451 pp., more
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Keyword
    Marine/Coastal
Authors  Top 
  • Lanckneus, J., more
  • De Moor, G., more
  • De Schaepmeester, G.
  • Libeer, L.
Abstract
    Different surveys were made on the Flemish Banks between 1982 and 1988 using side-scan sonar and echosounder. The maintenance of the Flemish Banks is explained by a sedimentdynamic model which uses megaripples rather than sandwaves as residual sand transport indicators. The model presents a continuity in time as all major transport paths could be recognize on the different recordings. Nevertheless, differences in the distribution and geometry of bedforms occur specifically in the deeper northern and southern edges of the banks where reversals of the asymetry of megaripples were detected. The characteristics of the detected bedforms on the central shallwoer parts of the banks remain similar through time. Longitudinal transport of sand parallel to the bank axis can occur temporarily on the bank summit in one or two opposing directions.
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