Articles | Volume 10, issue 6
Research article
14 Nov 2022
Research article |  | 14 Nov 2022

Rockfall trajectory reconstruction: a flexible method utilizing video footage and high-resolution terrain models

François Noël, Michel Jaboyedoff, Andrin Caviezel, Clément Hibert, Franck Bourrier, and Jean-Philippe Malet

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Cited articles

Berger, F. and Dorren, L. K. A.: Objective comparison of rockfall models using real size experimental data, in: Disaster mitigation of debris flows, slope failures and landslides, Universal Academy Press. Inc., Tokyo, Japan, 245–252, ISBN 4-946443-98-3, 2006. 
Berger, F., Martin, R., Auber, B., and Mathy, A.: Etude comparative, en utilisant l'événement du 28 décembre 2008 à Saint Paul de Varces, du zonage de l'aléa chute de pierre avec différents outils de simulation trajectographique et différentes matrices d'aléa, report, Cemagref, Grenoble, 226 pp., (last access: 10 November 2022), 2011. 
Bonneau, D. A., Hutchinson, D. J., DiFrancesco, P.-M., Coombs, M., and Sala, Z.: Three-dimensional rockfall shape back analysis: methods and implications, Nat. Hazards Earth Syst. Sci., 19, 2745–2765,, 2019. 
Boucheny, C.: Visualisation scientifique interactive de grands volumes de données: pour une approche perceptive, PHD thesis, Université Joseph Fourier, HAL Id: tel-00438464, version 1, 198 pp., 2009. 
Bourrier, F., Berger, F., Tardif, P., Dorren, L., and Hungr, O.: Rockfall rebound: comparison of detailed field experiments and alternative modelling approaches, Earth Surf. Process. Landforms, 37, 656–665,, 2012. 
Short summary
Rockfall simulations are often performed to make sure infrastructure is safe. For that purpose, rockfall trajectory data are needed to calibrate the simulation models. In this paper, an affordable, flexible, and efficient trajectory reconstruction method is proposed. The method is tested by reconstructing trajectories from a full-scale rockfall experiment involving 2670 kg rocks and a flexible barrier. The results highlight improvements in precision and accuracy of the proposed method.