Articles | Volume 14, issue 12
https://doi.org/10.5194/nhess-14-3175-2014
https://doi.org/10.5194/nhess-14-3175-2014
Research article
 | 
02 Dec 2014
Research article |  | 02 Dec 2014

Seismic and mechanical studies of the artificially triggered rockfall at Mount Néron (French Alps, December 2011)

P. Bottelin, D. Jongmans, D. Daudon, A. Mathy, A. Helmstetter, V. Bonilla-Sierra, H. Cadet, D. Amitrano, V. Richefeu, L. Lorier, L. Baillet, P. Villard, and F. Donzé

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Short summary
Two mid-size rockfalls (~2,000 m3 each) occurred at the same place in 2011. While the first event was natural, the second one was artificially triggered and recorded by video cameras and seismic sensors. The measurements showed propagation velocities ranging from 12 to 30 m/s over the successive event phases. The most seismogenic phases were related to ground impact after free-fall and individual block impacts into a protective barrier. DEM reproduced the key features of the rockfall dynamics.
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