Articles | Volume 8, issue 3
https://doi.org/10.5194/esurf-8-825-2020
https://doi.org/10.5194/esurf-8-825-2020
Research article
 | 
29 Sep 2020
Research article |  | 29 Sep 2020

A bed load transport equation based on the spatial distribution of shear stress – Oak Creek revisited

Angel Monsalve, Catalina Segura, Nicole Hucke, and Scott Katz

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Cited articles

Barry, J. J., Buffington, J. M., and King, J. G.: A general power equation for predicting bed load transport rates in gravel bed rivers, Water Resour. Res., 40, 1–22, https://doi.org/10.1029/2004WR003190, 2004. 
Barton, G. J., McDonald, R. R., Nelson, J. M., and Dinehart, R. R.: Simulation of flow and sediment mobility using a multidimensional flow model for the white sturgeon critical-habitat reach, Kootenai River near Bonners Ferry, Idaho, US Geological Survey Scientific Investigations Report 2005-5230, US Geological Survey, Reston, Virginia, p. 54, 2005. 
Beschta, R. L.: Increased bag size improves Helley-Smith bed load sampler for use in streams with high sand and organic matter transport, in: Erosion and sediment transport measurement, Proceedings of the Florence symposium IAHS, June 1981, Florence, 17–25, 1981. 
Bevington, P. R. and Robinson, D. K.: Data reduction and error analysis for the physical sciences, 3rd Edition, McGraw-Hill, New York, NY, USA, 2003. 
Bradley, D. N. and Tucker, G. E.: Measuring gravel transport and dispersion in a mountain river using passive radio tracers, Earth Surf. Proc. Land., 37, 1034–1045, https://doi.org/10.1002/esp.3223, 2012. 
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Short summary
Part of the inaccuracies when estimating bed load transport in gravel-bed rivers is because we are not considering the wide distributions of shear stress in these systems. We modified a subsurface-based bed load transport equation to include these distributions. By doing so, our approach accurately predicts bed load transport rates when the pavement layer is still present, while the original one predicts zero transport. For high flows, our method had similar performance to the original equation.