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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Cited articles

Allstadt, K.: Extracting source characteristics and dynamics of the August 2010 Mount Meager Landslide from broadband seismograms, J. Geophys. Res.-Earth, 118, 1472–1490, https://doi.org/10.1002/jgrf.20110, 2013.
Baillard, C., Crawford, W. C., Ballu, V., Hibert, C., and Mangeney, A.: An automatic Kurtosis-based P and S phase picker designed for local and regional seismic networks, B. Seism. Soc. Am., 104, 394–409, https://doi.org/10.1785/0120120347, 2013.
Banton, J., Villard, P., Jongmans, D., and Scavia, C.: Two-dimensional discrete element models of debris avalanches: Parameterization and the reproducibility of experimental results, J. Geophys. Res., 114, F04013, https://doi.org/10.1029/2008JF001161, 2009.
Battaglia, J., Got, J.-L., and Okubo, P.: Location of long-period events below Kilauea Volcano using seismic amplitudes and accurate relative relocation, J. Geophys. Res., 108, ESE 2-1–2-16, https://doi.org/10.1029/2003JB002517, 2003.
Bazant, Z. P.: Spurious reflection of elastic waves in non-uniform finite element grids, Comput. Method. Appl. M., 16, 91–100, 1978
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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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