Estimation of mud rheological parameters using genetic algorithm for a two-layer wave-mud system

Zhang Q.-H., Wing Hong Onyx Wai, Z. D. Zhao

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

1 Citation (Scopus)

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.
Original languageEnglish
Title of host publicationEstuarine and Coastal Fine Sediments Dynamics Intercoh 2003
Pages263-275
Number of pages13
DOIs
Publication statusPublished - 1 Dec 2007

Publication series

NameProceedings in Marine Science
Volume8
ISSN (Print)1568-2692

Keywords

  • Deposited mud
  • genetic algorithm
  • mixed mud
  • viscoelastic parameters
  • wave attenuation

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Geochemistry and Petrology
  • Oceanography

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