Abstract
By assuming the mud bed is a linear viscoelastic medium, a method to estimate the rheological parameters (shear modulus and viscosity) based on the measurements of wave length and wave attenuation coefficient for a two-layer water-mud system was developed. Comparisons between the estimated and the experimental results showed that the estimated rheological parameters could represent the depth-averaged rheological parameters of the mud beds. The selected linear model, however, cannot reflect the nonlinear properties of wave-mud interactions. The results also show that the shear moduli and viscosities of mixed mud beds differ significantly from those of the deposited mud beds, even though the mud bulk densities are the same. The results suggest that when wave-mud interactions and other related issues on muddy coasts are of interest, the rheological parameters should consider the effect of mud consolidation status.
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