Fine sediment carrying capacity of combined wave and current flows

Qing He ZHANG, Bing YAN, Wing Hong Onyx Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

Abstract: The so-called fine sediment in many coastal areas and estuaries in China is mostly referred to the mixture of cohesive sediment and non-cohesive sediment. To predict the mixed type fine sediment transport, sediment carrying capacity formulae combined with the 2-D suspended sediment transport equation and morphologic equation have been widely used in China. In the present study, the sediment carrying capacity formula suggested by Dou et al. (1995) for wave conditions has been improved and implemented for the prediction of sediment transport in nearshore regions where wave activities are significant. The improvement is based on the wave energy dissipation principle inside and outside the surf zone. In the improved formula, sediment in suspension increases with the magnitude of the wave period and this feature complies with general observations. More than 300 laboratory and field measured data sets have been reviewed and 12 of them have been used to verify and determine the major coefficients in the improved formula. The application of the sediment carrying capacity model in combined wave and current situations shows that the model can faithfully reproduce the cross-shore sediment concentration distributions at the southwest coast of Bohai Bay.
Original languageEnglish
Pages (from-to)425-438
Number of pages14
JournalInternational Journal of Sediment Research
Volume24
Issue number4
DOIs
Publication statusPublished - 1 Dec 2009

Keywords

  • Bohai Bay
  • Combined wave and current
  • Fine sediment
  • Sediment carrying capacity
  • Sediment transport
  • Surf zone

ASJC Scopus subject areas

  • Geology
  • Stratigraphy

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