Morphometric properties of alternate bars and water discharge: a laboratory investigation

Redolfi, Marco; Welber, Matilde; Carlin, Mattia; Tubino, Marco; Bertoldi, Walter

doi:https://doi.org/10.5194/esurf-8-789-2020

Articles | Volume 8, issue 3

https://doi.org/10.5194/esurf-8-789-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esurf-8-789-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 8, issue 3

Research article

|

23 Sep 2020

Research article |

| 23 Sep 2020

Morphometric properties of alternate bars and water discharge: a laboratory investigation

Marco Redolfi, Matilde Welber, Mattia Carlin, Marco Tubino, and Walter Bertoldi

Data sets

Laboratory experiments on river alternate bars M. Welber, M. Redolfi, and W. Bertoldi https://doi.org/10.5281/zenodo.3929371

Model code and software

A Matlab code for computing the resonant aspect ratio and the critical aspect ratio for the formation of free alternate bars in alluvial rivers M. Redolfi https://bitbucket.org/Marco_Redolfi/bars_res-crit

A Matlab function for the Fourier analysis of bed topographies of alternate bars in rivers M. Redolfi https://bitbucket.org/Marco_Redolfi/fourier_transform_bars

Short summary

Alternate bars are large sediment deposits that tend to naturally form in rivers when the channel width is sufficiently large. Our laboratory experiments on a scaled model reveal that equilibrium properties of self-formed alternate bars highly depend on the water discharge with respect to the relevant theoretical thresholds. This work provides fundamental information for predicting the response of rivers to natural or human alterations of the flow regime.