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Title

Mejora de la evaluación de la erosión por flujo concentrado en taludes de carreteras sobre diferentes materiales en Andalucía mediante foto-reconstrucción

Other TitlesImproving the assessment of concentrated flow erosion at roadsides on diffe rent materials in Andalusia using 3D photo-reconstruction
AuthorsCastillo, Carlos ; Rodríguez, Abraham; Giráldez, Juan Vicente ; Gómez Calero, José Alfonso
KeywordsErosión
Taludes de carreteras
Flujo concentrado
Foto-reconstrucción 3D
Erosion
Road banks
Concentrated flow
3D photo-reconstruction
Issue DateSep-2014
PublisherUniversidad de Extremadura
Sociedad Española de Geomorfología
CitationAvances de la Geomorfología en España 2012-2014. XIII Reunión Nacional de Geomorfología: 176-179 (2014)
AbstractA field study using 3D photo-reconstruction has been made to estimate the rates of concentrated flow erosion at three roadsides of transport infrastructures across Andalusia (Spain) on different parent materials. We tested a methodology based on a combination of ‘structure from motion’ software, pictures taken from a 3-m-long pole, relative referencing using a levelled frame and automated algorithms for rill volume assessment. The proposed methodology proved to be an efficient, inexpensive and accurate approach for erosion assessment of roadsides, characterized by challenging conditions of slope, accessibility and reduced rill dimensions. Significant differences were found between the rates of flow concentrated erosion on diverse materials, with the highest rates being found on sand formations (6 kg·m-2·yr-1). In all cases soil losses were well above tolerable levels. These results provide evidence of the need of improved designs or treatments in roadsides to control the effects of water erosion, as well as the usefulness of 3D photo-reconstruction in this kind of technical studies.
DescriptionTrabajo presentado en la XIII Reunión Nacional de Geomorfología, celebrado en Cáceres del 9 al 12 de septiembre de 2014.
URIhttp://hdl.handle.net/10261/166174
ISBN978-84 -61-1123-9
Appears in Collections:(IAS) Libros y partes de libros
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