Articles | Volume 9, issue 4
https://doi.org/10.5194/esurf-9-995-2021
https://doi.org/10.5194/esurf-9-995-2021
Research article
 | 
17 Aug 2021
Research article |  | 17 Aug 2021

Controls on the grain size distribution of landslides in Taiwan: the influence of drop height, scar depth and bedrock strength

Odin Marc, Jens M. Turowski, and Patrick Meunier

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Cited articles

Allen, P. A., Armitage, J. J., Whittaker, A. C., Michael, N. A., Roda-Boluda, D., and D'Arcy, M.: Fragmentation Model of the Grain Size Mix of Sediment Supplied to Basins, J. Geol., 123, 405–427, https://doi.org/10.1086/683113, 2015. a, b
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Attal, M. and Lavé, J.: Changes of bedload characteristics along the Marsyandi River (central Nepal): Implications for understanding hillslope sediment supply, sediment load evolution along fluvial networks, and denudation in active orogenic belts, Geol. Soc. Am. Spec. Pap., 398, 143–171, https://doi.org/10.1130/2006.2398(09), 2006. a, b, c, d, e, f
Attal, M., Mudd, S. M., Hurst, M. D., Weinman, B., Yoo, K., and Naylor, M.: Impact of change in erosion rate and landscape steepness on hillslope and fluvial sediments grain size in the Feather River basin (Sierra Nevada, California), Earth Surf. Dynam., 3, 201–222, https://doi.org/10.5194/esurf-3-201-2015, 2015. a, b
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Short summary
The size of grains delivered to rivers is an essential parameter for understanding erosion and sediment transport and their related hazards. In mountains, landslides deliver these rock fragments, but few studies have analyzed the landslide properties that control the resulting sizes. We present measurements on 17 landslides from Taiwan and show that their grain sizes depend on rock strength, landslide depth and drop height, thereby validating and updating a previous theory on fragmentation.