Aplicación de técnicas avanzadas en geomática para el estudio de la dinámica sedimentaria en cárcavas del Pre-Pirineo aragonés
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Damià Vericat Querol [1] ; Mark Smith [2] ; José Andrés Lopez Tarazón [1] ; Tena Tarruella, Anna [1] ; J. Brasington [3] ; Ramón J. Batalla [1]
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[1] Universitat de Lleida
Universitat de Lleida
Lérida, España
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[2] Aberystwyth University
Aberystwyth University
Aberystwyth, Reino Unido
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[3] Queen Mary University of London
Queen Mary University of London
Reino Unido
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- Localización: Avances de la geomorfología en España, 2010-2012: actas de la XII Reunión Nacional de Geomorfología, Santander, 17-20 septiembre de 2012 / coord. por Alberto González Díez, 2012, ISBN 978-84-86116-54-5, págs. 223-226
- Idioma: español
- Títulos paralelos:
- Badland morphology and evolution by means of the application of new geomatics technologies: a pilot study in the Aragon Pre-Pyrenee
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Resumen
In this paper we present the topographic change of an experimental badland. Multi-temporal topographic models were obtained by means of TLS. Additionally, rainfall between each topographic survey was measured, while air temperature was monitored continuously. A total of 7 topographic surveys were obtained (between 1 and 7 million observations). ToPCAT, an open source algorithm designed to analyse large 3D point clouds, was applied to the TLS data sets. The long term (16 months) erosion rate was estimated between 3 and 5 cm, yielding an annual net erosion of > -4cm/yr for the whole experimental badland. These results show that TLS data sets provide new opportunities in the study of topographic change in highly erodible landscapes where the use of conventional ‘invasive’ topographic technologies is limited. TLS-derived morphometric sediment budgets offer distributed estimations of topographic change, permitting evaluation of the main factors controlling erosion processes at multiple spatial and temporal resolutions.
