Indicadores precursores de desprendimientos de rocas en la evolución de escarpes rocosos
- M.J. Royán
- A. Abellán
- J.M. Vilaplana
- Susanne Schnabel (coord.)
- Álvaro Gómez Gutiérrez (coord.)
Editorial: Universidad de Extremadura
ISBN: 978-84-617-1123-9
Año de publicación: 2014
Páginas: 384-387
Congreso: Reunión Nacional de Geomorfología (13. 2014. Cáceres)
Tipo: Aportación congreso
Resumen
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.