RT Journal Article
T1 Morpho-textural implications to bedload flux and texture in the sand-gravel ephemeral Poveda Gully
A1 Zapico Alonso, Ignacio
A1 Laronne, Jonathan
A1 Lucía Vela, Ana
A1 Martín Duque, José Francisco
AB We report on channel morpho-texture and bedload transport in a natural, steep, sand-gravel ephemeral channel draining the small Poveda Gully watershed in the mining area of the Alto Tajo Natural Park, Spain. First-ever continuous bedload flux and texture monitoring in a transitional sand-gravel environment was undertaken by two independent Reid-type slot samplers. Morphological changes in the feeder reach have been quantified by TLS (terrestrial laser scanning) and SfM (structure from motion) technologies. We identified a pattern in channel-bed morphology and texture (morpho-texture): when the channel is incised its texture is coarser, otherwise sand-filling occurs. These changes determine bedload flux and texture: sand fill brings rise to high fluxes and fine-grained bedload, whereas incision caused by evacuation of sand leaves a sandy-gravel surface with lower bedload fluxes and coarser texture. A video camera recording during events allowed identification of dramatic changes in bedload flux and texture owing to the appearance and erosion of bars, supplying field evidence to explain the difficulty in the prediction of bedload flux at short time intervals.
PB Elsevier
SN 0169-555X
YR 2018
FD 2018-12-01
LK https://hdl.handle.net/20.500.14352/100142
UL https://hdl.handle.net/20.500.14352/100142
LA eng
NO Zapico, I., et al. «Morpho-Textural Implications to Bedload Flux and Texture in the Sand-Gravel Ephemeral Poveda Gully». Geomorphology, vol. 322, diciembre de 2018, pp. 53-65. DOI.org (Crossref), https://doi.org/10.1016/j.geomorph.2018.08.026.
NO Ministerio de Ciencia e Innovación (España)
NO Ministerio de Economía y Competitividad (España)
NO Junta de Castilla-La Mancha
NO Comunidad de Madrid
DS Docta Complutense
RD 7 abr 2025