Resumen de Estimación de la producción de sedimento durante un evento de lluvia extraordinario mediante Láser Escáner Terrestre (TLS)
Xavier Rodríguez Lloveras, Emilio Rodríguez Caballero, A. Solé i Benet, Gerardo Benito Ferrández
Sediment production data during heavy rainfalls in Mediterranean region are scarce and limited by lack of instrumental stations. Several studies focused in the use of check dams as proxies for the quantification of sediment production. However, the applied techniques are not precise enough to quantify sediment production for a single event. High precision topography using Terrestrial Laser Scanner (TLS) can reduce the uncertainties of sediment estimation at event scale. During a study of sediment production at upper Guadalentín basin using TLS, an extraordinary event occurred. This work report on the methodology and results followed to derivate the sediment production from the September 28th 2012 rainfalls based on TLS data compared with older sediments. In the studied check dam, 99.88% of the sediment infill was produced by this event. The study confirms that check dams are excellent sediment tramps to characterize the sediment production during single events, if high precision topographic techniques (TLS) are complemented with stratigraphical records of the infill sediment.
