Articles | Volume 13, issue 1
https://doi.org/10.5194/esurf-13-23-2025
https://doi.org/10.5194/esurf-13-23-2025
Research article
 | 
13 Jan 2025
Research article |  | 13 Jan 2025

Equilibrium distance from long-range dune interactions

Jean Vérité, Clément Narteau, Olivier Rozier, Jeanne Alkalla, Laurie Barrier, and Sylvain Courrech du Pont

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Cited articles

Anderson, W. and Chamecki, M.: Numerical study of turbulent flow over complex aeolian dune fields: The White Sands National Monument, Phys. Rev. E, 89, 013005, https://doi.org/10.1103/PhysRevE.89.013005, 2014. a, b
Andreotti, B., Fourriere, A., Ould-Kaddour, F., Murray, B., and Claudin, P.: Giant aeolian dune size determined by the average depth of the atmospheric boundary layer, Nature, 457, 1120–1123, 2009. a, b
Araújo, A. D., Parteli, E., Pöschel, T., Andrade, J. S., and Herrmann, H. J.: Numerical modeling of the wind flow over a transverse dune, Sci. Rep.-UK, 3, 2858, https://doi.org/10.1038/srep02858, 2013. a
Arens, S., Van Kaam-Peters, H., and Van Boxel, J.: Air flow over foredunes and implications for sand transport, Earth Surf. Proc. Land., 20, 315–332, 1995. a
Assis, W. R. and Franklin, E. d. M.: A comprehensive picture for binary interactions of subaqueous barchans, Geophys. Res. Lett., 47, e2020GL089464, https://doi.org/10.1029/2020GL089464, 2020. a, b
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Short summary
Using a numerical model in 2D, we study how two identical dunes interact with each other when exposed to reversing winds. Depending on the distance between the dunes, they either repel or attract each other until they reach an equilibrium distance, which is controlled by the wind strength, wind reversal frequency, and dune size. This process is controlled by the modification of wind flow over dunes of various shapes, influencing the sediment transport downstream.
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