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Maintenance on the Flemish banks
De Moor, G. (1989). Maintenance on the Flemish banks, in: Henriet, J.-P. et al. (Ed.) The Quaternary and Tertiary geology of the Southern Bight, North Sea. pp. 185-216
In: Henriet, J.-P. et al. (Ed.) (1989). The Quaternary and Tertiary geology of the Southern Bight, North Sea. Ministry of Economic Affairs. Belgian Geological Survey: Brussel. 241 pp., meer
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  • De Moor, G.
Abstract
    The paper analyses present day residual short term morphodynamics and sediment dynamics during the periond 1982-1986 on the Kwinte Bank, one of the Flemish Banks using volumetric monitoring, visual bank profile comparison and mapping of bottom load transportation pathways, diagnostic bedform characteristics, departing from detailed sequential bathymetric profiling along fixed reference transverses, high precision navigation and positioning, echosounder record normalization, uniformization and equalization as well as from areal side scan sonar recording of bottom topography. It aims at a quantified approach of shape and location change and of sediment migration problems.It presents numerical data and a typology about volumetric evolution trends on the bank and on different bank parts. It advances a dynamical subdivision of the bank on sedimentdynamical and geomorphological grounds. It puts forward the existence of different sand transportation mechanisms such as residual uppiling from both surrounding swales by deflection of opposite directed residual bottom currents and providing bank maintenance, vertical sediment exchanges and longitudinal wave-like sediment transport along the bank. It advances an alternation of periods of local upbuilding using sand supplies at least partly eroded from other bank parts. It advocates a residual erosive nature of the steep bankside and alternations ( the steep side on both sides of kinks due to differences of evolution stage in a longer term bank position oscillation pattern, using therefore internal sedimentary structures and sequential map analyses.
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