Articles | Volume 6, issue 2
Research article
15 May 2018
Research article |  | 15 May 2018

Advection and dispersion of bed load tracers

Eric Lajeunesse, Olivier Devauchelle, and François James

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Cited articles

Agudo, J. and Wierschem, A.: Incipient motion of a single particle on regular substrates in laminar shear flow, Phys. Fluids, 24, 093302, https//, 2012. a
Ancey, C., Davison, A., Bohm, T., Jodeau, M., and Frey, P.: Entrainment and motion of coarse particles in a shallow water stream down a steep slope, J. Fluid Mech., 595, 83–114,, 2008. a
Berkowitz, B. and Scher, H.: Theory of anomalous chemical transport in random fracture networks, Phys. Rev. E, 57, 5858,, 1998. a
Blom, A. and Parker, G.: Vertical sorting and the morphodynamics of bed form–dominated rivers: A modeling framework, J. Geophys. Res.-Ea. Surf., 109, F02007,, 2004. a
Bradley, D. N.: Direct Observation of Heavy-Tailed Storage Times of Bed Load Tracer Particles Causing Anomalous Superdiffusion, Geophys. Res. Lett., 44, 12227–12235,, 2017. a, b, c
Short summary
Tracking the position of tracer particles entrained in a river is a popular method to investigate sediment transport. Using numerical simulations, we study the propagation of these tracers and find a transition between two regimes: an early regime in which the tracers are progressively set into motion and a late regime in which the tracers spread linearly. We derive analytical expressions for the behavior of the tracers in each regime. These expressions might help to interpret field data.