Evaluation of a Novel Approach to Determine the Critical Shields Stress Academic Article uri icon


  • This study investigated the sediment entrainment and critical shear stress in gravel-bed rivers. Measured rates of bed load transport were used to estimate the Shields stress parameter. The computed parameters were compared to those derived from the Meyer-Peter-Muller method. The agreement between these methods was good and the values of τ*c obtained by the two methods can be justified by the Shields diagram and decreased with increasing d50/d90 (where τ*c is critical Shields stress, d50 is sediment size with 50% particles finer and d90 sediment size with 90% particles finer). © 2010 ASCE.

author list (cited authors)

  • Motamedi, A., Afzalimehr, H., & Singh, V. P.

citation count

  • 3

publication date

  • May 2010