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- W1987545794 abstract "The mechanism underlying the generation of fluid mud by wave action is examined theoretically and experimentally. Experiments were made in a wave-current flume and an oscillating-water tunnel using two artificial cohesive sediments and a marine mud. The flume experiments indicated that fluid mud was generated by wave action if the wave height exceeded a threshold value. This value was found to increase with the consolidation period. Wave-averaged porewater pressures measured at the onset of liquefaction showed a transient decrease followed by a gradual build-up of an excess pressure. This is ascribed to the break-up of the aggregate structure (transient decrease) and compensation of reduced effective stresses (excess porewater pressure). Theoretical analysis shows that under normal conditions the maximal pressure-induced shear stress in a finite layer of a consolidated mud, modelled as a poro-elastic material, is much greater than the shear stresses at the bed surface caused by the oscillating flow. If the pressure-induced shear stress in the bed exceeds the yield strength of the mud at a particular level in the bed, the aggregate structure breaks up and the mud liquefies." @default.
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- W1987545794 date "1997-08-01" @default.
- W1987545794 modified "2023-10-18" @default.
- W1987545794 title "The Wave-induced Liquefaction of Cohesive Sediment Beds" @default.
- W1987545794 doi "https://doi.org/10.1006/ecss.1996.0184" @default.
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