Articles | Volume 21, issue 3
Nat. Hazards Earth Syst. Sci., 21, 1159–1177, 2021
https://doi.org/10.5194/nhess-21-1159-2021
Nat. Hazards Earth Syst. Sci., 21, 1159–1177, 2021
https://doi.org/10.5194/nhess-21-1159-2021
Research article
31 Mar 2021
Research article | 31 Mar 2021

Assessing the effect of lithological setting, block characteristics and slope topography on the runout length of rockfalls in the Alps and on the island of La Réunion

Kerstin Wegner et al.

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Cited articles

Abellán, A., Vilaplana, J. M., Calvet, J., García-Sellés, D., and Asensio, E.: Rockfall monitoring by Terrestrial Laser Scanning – case study of the basaltic rock face at Castellfollit de la Roca (Catalonia, Spain), Nat. Hazards Earth Syst. Sci., 11, 829–841, https://doi.org/10.5194/nhess-11-829-2011, 2011. 
Agliardi, F. and Crosta, G. B.: High resolution three-dimensional numerical modelling of rockfalls, Int. J. Rock Mech. Min., 40, 455–471, https://doi.org/10.1016/S1365-1609(03)00021-2, 2003. 
Azzoni, A. and de Freitas, M. H.: Experimentally gained parameters, decisive for rock fall analysis, Rock Mech. Rock Eng., 28, 111–124, https://doi.org/10.1007/BF01020064, 1995. 
Bennett, G. L., Molnar, P., Eisenbeiss, H., and McArdell, B. W.: Erosional power in the Swiss Alps: Characterization of slope failure in the Illgraben, Earth Surf. Proc. Land., 37, 1627–1640, https://doi.org/10.1002/esp.3263, 2012. 
Caine, N.: The texture of talus in Tasmania, J. Sediment. Res., 37, 796–803, https://doi.org/10.1306/74D717A3-2B21-11D7-8648000102C1865D, 1967. 
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Short summary
In mountainous regions rockfall is a common geomorphic process. We selected four study sites that feature different rock types. High-resolution terrestrial laser scanning data were acquired to measure the block size and block shape (axial ratio) of rockfall particles on the scree deposits. Laser scanning data were also used to characterize the morphology of these landforms. Our results show that hill slope and rock particle properties govern rock particle runout in a complex manner.
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