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ESurf | Articles | Volume 6, issue 4
Earth Surf. Dynam., 6, 1089-1099, 2018
https://doi.org/10.5194/esurf-6-1089-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Earth Surf. Dynam., 6, 1089-1099, 2018
https://doi.org/10.5194/esurf-6-1089-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 22 Nov 2018

Research article | 22 Nov 2018

Determining the scales of collective entrainment in collision-driven bed load

Dylan B. Lee and Douglas Jerolmack
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Cited articles  
Ancey, C. and Heyman, J.: A microstructural approach to bed load transport: mean behaviour and fluctuations of particle transport rates, J. Fluid Mech., 744, 129–168, 2014. a
Ancey, C., Davison, A., Böhm, 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, b, c, d, e, f, g
Bagnold, R. A.: The physics of wind blown sand and desert dunes, Methuen, London, 1941. a
Charru, F., Mouilleron, H., and Eiff, O.: Erosion and deposition of particles on a bed sheared by a viscous flow, J. Fluid Mech., 519, 55–80, 2004. a
Crocker, J., Crocker, J., and Grier, D.: Methods of Digital Video Microscopy for Colloidal Studies, J. Colloid Interf. Sci., 179, 298–310, https://doi.org/10.1006/jcis.1996.0217, 1996. a
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The transport of pebbles in a river is smooth and continuous under high flow conditions but under typical flows becomes erratic and unpredictable. We perform experiments to learn more about the origins of this unpredictable, intermittent behavior. Our results show that this unpredictability is similar to how infrequent avalanches occur in a sandpile. Transport events are similar in size but become more infrequent and erratic as the river transports less and less sediment.
The transport of pebbles in a river is smooth and continuous under high flow conditions but...
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