Articles | Volume 13, issue 2
https://doi.org/10.5194/esurf-13-277-2025
https://doi.org/10.5194/esurf-13-277-2025
Research article
 | 
31 Mar 2025
Research article |  | 31 Mar 2025

Hillslope diffusion and channel steepness in landscape evolution models

David G. Litwin, Luca C. Malatesta, and Leonard S. Sklar

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Cited articles

Andrews, D. J. and Bucknam, R. C.: Fitting Degradation of Shoreline Scarps by a Nonlinear Diffusion Model, J. Geophys. Res., 92, 12857–12867, 1987. a
Barnhart, K. R., Glade, R. C., Shobe, C. M., and Tucker, G. E.: Terrainbento 1.0: a Python package for multi-model analysis in long-term drainage basin evolution, Geosci. Model Dev., 12, 1267–1297, https://doi.org/10.5194/gmd-12-1267-2019, 2019. a, b
Barnhart, K. R., Hutton, E. W. H., Tucker, G. E., Gasparini, N. M., Istanbulluoglu, E., Hobley, D. E. J., Lyons, N. J., Mouchene, M., Nudurupati, S. S., Adams, J. M., and Bandaragoda, C.: Short communication: Landlab v2.0: a software package for Earth surface dynamics, Earth Surf. Dynam., 8, 379–397, https://doi.org/10.5194/esurf-8-379-2020, 2020a. a, b, c
Barnhart, K. R., Tucker, G. E., Doty, S. G., Glade, R. C., Shobe, C. M., Rossi, M. W., and Hill, M. C.: Projections of Landscape Evolution on a 10,000 Year Timescale With Assessment and Partitioning of Uncertainty Sources, J. Geophys. Res.-Earth Surf., 125, e2020JF005795, https://doi.org/10.1029/2020JF005795, 2020b. a
Beaumont, C., Fullsack, P., and Hamilton, J.: Erosional control of active compressional orogens, in: Thrust Tectonics, edited by: McClay, K. R., 1–18 pp., Springer Netherlands, Dordrecht, ISBN 978-94-011-3066-0, https://doi.org/10.1007/978-94-011-3066-0_1, 1992. a, b
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Short summary
Channel–hillslope coupling in landscape evolution models can strongly affect channel profiles. When hillslope diffusion is applied everywhere and only topography is tracked, a new scaling predicts how detachment-limited channels steepen with hillslope diffusion. Field data support channel steepening to transport sediment but not as predicted by the scaling, highlighting the need for a critical inspection of channel–hillslope coupling approaches.
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