Indicadores precursores de desprendimientos de rocas en la evolución de escarpes rocosos
- Autores: Manuel J. Royan, Antonio Abellán Fernández, Joan Manuel Vilaplana Fernández
- Localización: Avances de la Geomorfología en España 2012-2014 / coord. por Susanne Cecilia Schnabel, Álvaro Gómez Gutiérrez, 2014, ISBN 978-84-617-1123-9, págs. 384-387
- Idioma: español
- Títulos paralelos:
- Rockfall precursory indicators on the evolution of rocky slopes
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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.
