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

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

doi:https://doi.org/10.5194/nhess-14-3175-2014

Articles | Volume 14, issue 12

https://doi.org/10.5194/nhess-14-3175-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/nhess-14-3175-2014

© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 12

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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Final revised paper (published on 02 Dec 2014)
Preprint (discussion started on 14 Feb 2014)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C133: 'Some Short comments', Anonymous Referee #1, 07 Mar 2014
- AC C137: 'Interactive comment - Anonymous referee #1', Pierre Bottelin, 10 Mar 2014
SC C551: 'comments on the paper nhess-2013-246- and anonymous review', Hans-Balder Havenith, 03 May 2014
- AC C1965: 'nhess-2013-246', Pierre Bottelin, 04 Sep 2014
RC C2388: 'Great paper ...', Anonymous Referee #3, 01 Nov 2014

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.