Articles | Volume 12, issue 5
https://doi.org/10.5194/esurf-12-1205-2024
https://doi.org/10.5194/esurf-12-1205-2024
Research article
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22 Oct 2024
Research article | Highlight paper |  | 22 Oct 2024

Barchan swarm dynamics from a Two-Flank Agent-Based Model

Dominic T. Robson and Andreas C. W. Baas

Cited articles

Al-Dousari, A. and Pye, K.: Mapping and monitoring of dunes in northwestern Kuwait, Kuwait J. Sci. Eng., 32, 119–134, 2005. 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, c, d
Assis, W. R. and Franklin, E. D. M.: Morphodynamics of barchan-barchan interactions investigated at the grain scale, J. Geophys. Res.-Earth, 126, e2021JF006237, https://doi.org/10.1029/2021JF006237, 2021. a
Baas, A. C. and Delobel, L. A.: Desert dunes transformed by end-of-century changes in wind climate, Nat. Clim. Change, 12, 999–1006, 2022. a, b
Bagnold, R. A.: The Physics of Blown Sand and Desert Dunes, Methuen, London, ISBN- :0-486-43931-3, 1941. a, b, c, d, e, f, g
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Editorial statement
The paper presents a new approach for reduced effort dune modelling that will be of interest to a broad audience across the geosciences.
Short summary
Barchans are fast-moving sand dunes which form large populations (swarms) on Earth and Mars. We show that a small range of model parameters produces swarms in which dune size does not vary downwind – something that is observed in nature but not when using earlier models. We also show how the shape of dunes and the spatial patterns they form are affected by wind direction. This work furthers our understanding of the interplay between environmental drivers, dune interactions, and swarm properties.
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