Flume experiments with tracer stones under bedload transport

M. Wong, G. Parker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A channel-averaged deterministic approach is commonly used to study bedload transport in gravel-bed streams. Here an alternative formulation based on tracking the vertical and streamwise displacement of individual bed particles, and mass continuity of the sediment in the bed and bedload expressed in probabilistic terms is presented. Flume physical modeling of bedload transport with tracer stones is used for the development of the new theory. All experiments presented here were conducted under normal flow equilibrium transport conditions. The results obtained have been used to derive predictors for the probability density functions of bed elevation fluctuations, particle entrainment into bedload transport, and streamwise displacement of particles from entrainment to deposition.The formulation links tracer conservation with conservation of gravel as awhole, and in addition establishes a connection between vertical and streamwise dispersion of tracers with the overall bedload transport.

Original languageEnglish (US)
Title of host publicationRiver, Coastal and Estuarine Morphodynamics
Subtitle of host publicationRCEM 2005 - Proceedings of the 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Pages131-139
Number of pages9
StatePublished - Dec 1 2006
Event4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2005 - Urbana, IL, United States
Duration: Oct 4 2005Oct 7 2005

Publication series

NameRiver, Coastal and Estuarine Morphodynamics: RCEM 2005 - Proceedings of the 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
Volume1

Other

Other4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2005
CountryUnited States
CityUrbana, IL
Period10/4/0510/7/05

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ASJC Scopus subject areas

  • Ecological Modeling
  • Environmental Chemistry

Cite this

Wong, M., & Parker, G. (2006). Flume experiments with tracer stones under bedload transport. In River, Coastal and Estuarine Morphodynamics: RCEM 2005 - Proceedings of the 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics (pp. 131-139). (River, Coastal and Estuarine Morphodynamics: RCEM 2005 - Proceedings of the 4th IAHR Symposium on River, Coastal and Estuarine Morphodynamics; Vol. 1).