Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 11, issue 6
Articles | Volume 11, issue 6
https://doi.org/10.5194/esurf-11-1283-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-11-1283-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 6
Research article
 | 
13 Dec 2023
Research article |  | 13 Dec 2023

Coexistence of two dune scales in a lowland river

Judith Y. Zomer, Bart Vermeulen, and Antonius J. F. Hoitink

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Short summary
Secondary bedforms that are superimposed on large, primary dunes likely play a large role in fluvial systems. This study demonstrates that they can be omnipresent. Especially during peak flows, they grow large and can have steep slopes, likely affecting flood risk and sediment transport dynamics. Primary dune morphology determines whether they continuously or intermittently migrate. During discharge peaks, the secondary bedforms can become the dominant dune scale.
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