Articles | Volume 10, issue 5
https://doi.org/10.5194/esurf-10-953-2022
https://doi.org/10.5194/esurf-10-953-2022
Research article
 | 
07 Oct 2022
Research article |  | 07 Oct 2022

Grain size of fluvial gravel bars from close-range UAV imagery – uncertainty in segmentation-based data

David Mair, Ariel Henrique Do Prado, Philippos Garefalakis, Alessandro Lechmann, Alexander Whittaker, and Fritz Schlunegger

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Cited articles

Attal, M., Mudd, S. M., Hurst, M. D., Weinman, B., Yoo, K., and Naylor, M.: Impact of change in erosion rate and landscape steepness on hillslope and fluvial sediments grain size in the Feather River basin (Sierra Nevada, California), Earth Surf. Dynam., 3, 201–222, https://doi.org/10.5194/esurf-3-201-2015, 2015. 
Bekaddour, T., Schlunegger, F., Attal, M., and Norton, K. P.: Lateral sediment sources and knickzones as controls on spatio-temporal variations of sediment transport in an Alpine river, Sedimentology, 60, 342–357, https://doi.org/10.1111/sed.12009, 2013. 
Brasington, J., Vericat, D., and Rychkov, I.: Modeling river bed morphology, roughness, and surface sedimentology using high resolution terrestrial laser scanning, Water Resour. Res., 48, 1–18, https://doi.org/10.1029/2012WR012223, 2012. 
Bunte, K. and Abt, S. R.: Sampling Surface and Subsurface Particle-Size Distributions in Wadable Gravel- and Cobble-Bed Streams for Analyses in Sediment Transport, Hydraulics, and Streambed Monitoring, 428 pp. https://doi.org/10.2737/RMRS-GTR-74, 2001. 
Buscombe, D.: Estimation of grain-size distributions and associated parameters from digital images of sediment, Sediment. Geol., 210, 1–10, https://doi.org/10.1016/j.sedgeo.2008.06.007, 2008. 
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Short summary
Grain size data are important for studying and managing rivers, but they are difficult to obtain...
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