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Earth Surface Dynamics An interactive open-access journal of the European Geosciences Union
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Volume 5, issue 3
Earth Surf. Dynam., 5, 399–415, 2017
https://doi.org/10.5194/esurf-5-399-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Earth Surf. Dynam., 5, 399–415, 2017
https://doi.org/10.5194/esurf-5-399-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Jul 2017

Research article | 19 Jul 2017

The influence of turbulent bursting on sediment resuspension under unidirectional currents

Sarik Salim et al.
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Aagaard, T. and Jensen, S. G.: Sediment concentration and vertical mixing under breaking waves, Mar. Geol., 336, 146–159, https://doi.org/10.1016/j.margeo.2012.11.015, 2013.
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Bagnold, R. A.: The flow of cohesionless grains in fluids, Philos. Tr. R. Soc. S.-A, 249, 235–297, 1956.
Best, J. I. M.: On the entrainment of sediment and initiation of bed defects: insights from recent developments within turbulent boundary layer research, Sedimentology, 39, 797–811, 1992.
Biron, P. M., Robson, C., Lapointe, M. F., and Gaskin, S. J.: Comparing different methods of bed shear stress estimates in simple and complex flow fields, Earth Surf. Proc. Land., 29, 1403–1415, https://doi.org/10.1002/esp.1111, 2004.
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The aim of this paper was to verify the existence of a mean critical velocity concept in terms of turbulent bursting phenomena. Laboratory experiments were undertaken in a unidirectional current flume where an acoustic Doppler velocimeter was used. Results in the laboratory conditions both above and below the measured mean critical velocity highlighted the need to re-evaluate the accuracy of a single time-averaged critical velocity for the initiation of sediment entrainment.
The aim of this paper was to verify the existence of a mean critical velocity concept in terms...
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