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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Sediment management and morphodynamics : Turning the tide: experimental creation of morphodynamic estuaries
Turning the tide: experimental creation of morphodynamic estuaries
Author : MAARTEN G. KLEINHANS(1)
ABSTRACT
Large-scale equilibrium of estuaries and small-scale bar and channel morphodynamics are poorly understood.
Morphodynamic models cannot yet reproduce the dynamic balance between cohesive bank formation (mud flats,
marshes, riparian zones) and bank destruction. Furthermore many long-term models produce static morphology rather
than the dynamic bar cycles, channel migration and ebb and flood channel interactions. We present pilot experiments in
a novel experimental setup that produce these dynamic phenomena under entirely constant boundary conditions. We
periodically tilted the entire flume to obtain and maintain similar tidal currents and sediment mobility in the flood and ebb
phases. This contrasts classical methods where water level was periodically varied. Three sets of experiments together
provide evidence that the method of tilting produces interesting morphodynamics: short tidal basins, estuaries and short
reaches of estuaries with multiple channels and shoals.
File Size : 567,060 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Sediment management and morphodynamics
Date Published : 20/08/2015
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