Resumen de Indicadores precursores de desprendimientos de rocas en la evolución de escarpes rocosos
Manuel J. Royan, Antonio Abellán Fernández, Joan Manuel Vilaplana Fernández
In this study we compared the evolution of two types of precursory indicators over time: pre-failure deformation and precursory rockfalls. Our study was based on a multi-temporal comparison of LiDAR datasets using a Terrestrial Laser Scanner (TLS) Ilris 3D (Optech). The analysis was performed in a pilot study area located at Puigcercós scarp (Catalonia, Spain) using 19 different fieldwork campaigns, which were carried out during more than five years (2143 days). Our results show that: (a) the temporal evolution of the deformation has an exponential pattern with an acceleration before the final rupture; and (b) an analogous acceleration, which occurs shortly before the final failure, is also observed when analyzing the evolution of accumulated precursory rockfalls events over time.
