Resumen de Investigaciones dendrogeomorfológicas aplicadas al estudio de la peligrosidad por avenidas e inundaciones en el Parque Nacional de la Caldera de Taburiente (La Palma, Islas Canarias)

Andrés Díez Herrero, María del Mar Génova Fuster, Pablo Lucas Máyer Suárez, Juan Antonio Ballesteros Cánovas, Laura Becerril Carretero, Juan Manuel Rubiales Jiménez, Mario Hernández-Ruiz, Miguel Ángel Saz Sánchez, José María Bodoque del Pozo, V. Ruiz Villanueva

• Las Angustias torrent is an ungauged stream located in the Caldera de Taburiente National Park (Canary Islands), where frequent and intense flood events occur (even causing fatalities, such as in November 2001). The aim of this research is to analyse the flood hazard in one of the most visited areas of this protected area. To carry out this objective, during two dendrogeomorphological campaigns, all pine trees located on the stream bed and banks showing external evidence of flash flood damage were sampled. In addition, a detailed topographical survey using GPS and total station allowed us to obtain the inputs for hydraulic modelling. In the preliminary results, two flood events have been identified (1967-1968 and 1999-2000), and evidence of other dates has been observed (1976, 1983, 1993 and 2001). Magnitude reconstruction of these events will improve flood hazard and risk analyses and will be useful for National Park managers.