Modal and thermal analysis of Les Arches unstable rock column (Vercors massif, French Alps) Pierre Bottelin, C. Lévy, Laurent Baillet, Denis Jongmans, Philippe Gueguen To cite this version: Pierre Bottelin, C. Lévy, Laurent Baillet, Denis Jongmans, Philippe Gueguen. Modal and thermal analysis of Les Arches unstable rock column (Vercors massif, French Alps). Geophysical Journal International, Oxford University Press (OUP), 2013, 194 (2), pp 849-858. 10.1093/gji/ggt046. hal- 00933213 HAL Id: hal-00933213 https://hal.archives-ouvertes.fr/hal-00933213 Submitted on 20 Jan 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Geophysical Journal International Geophys. J. Int. (2013) doi: 10.1093/gji/ggt046 Geophysical Journal International Advance Access published May 8, 2013 Modal and thermal analysis of Les Arches unstable rock column (Vercors massif, French Alps) P. Bottelin,1 C. Levy,´ 2 L. Baillet,1 D. Jongmans1 and P. Gueguen´ 1 1ISTerre, Universite´ de Grenoble 1, CNRS, IFSTTAR, F-38041 Grenoble, France. E-mail:
[email protected] 2Geoazur,´ Universite´ de Nice Sophia Antipolis (UNS), CNRS, 250 av Einstein, 06560 Valbonne, France Accepted 2013 February 4. Received 2012 December 5; in original form 2012 July 4 SUMMARY A potentially unstable limestone column (∼1000 m3, Vercors, French Alps) delineated by an open rear fracture was continuously instrumented with two three-component seismic sensors from mid-May 2009 to mid-October 2011.