Rockfall frequency in different geomorphological conditions

Didier Hantz (1) , Thomas Dewez (2) , Clara Lévy (2) , Antoine Guerin (3) , Michel Jaboyedoff (3)

1 ISTerre - Institut des Sciences de la Terre
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
3 UNIL - Université de Lausanne = University of Lausanne

The knowledge of the rockfall frequency in a cliff is needed for quantitative rockfall hazard assessment (Hantz et al., 2016). It can be estimated from historical data bases (e.g. Hantz et al., 2003) or from diachronic comparison of digital cliff topographic models (e.g. Dewez et al. 2013, Guerin et al. 2014). An empirical approach is proposed to be used when historical data bases are not significant (not enough events) and diachronic digital models not available.

Mots clés: rockfall; frequency; causal factors

Domaines: Planète et Univers [physics]; Sciences de la Terre; Géologie appliquée

Didier Hantz, Thomas Dewez, Clara Lévy, Antoine Guerin, Michel Jaboyedoff. Rockfall frequency in different geomorphological conditions. International Symposium Rock Slope Stability 2016, Nov 2016, Lyon, France. ⟨hal-01387619⟩