RT Journal Article
T1 Continuous monitoring of bedload discharge in a small, steep sandy channel
A1 Lucía Vela, Ana
A1 Recking, Alain
A1 Martín Duque, José Francisco
A1 Storz Peretz, Yael
A1 Laronne, Jonathan
AB This paper reports on bedload flux and texture monitored in a natural, steep, sandy ephemeral channel draining a small gullied sandy watershed, the Barranca de los Pinos (1.32 ha), Spain. Bedload flux was continuously monitored with two independent Reid-type slot samplers; bedload texture was determined from the sediment collected in the samplers. Channel morphology was surveyed with a high spatial resolution with a Terrestrial Laser Scanner. The monitored instantaneous bedload fluxes are among the highest measured in natural rivers, characterized by high temporal and spatial variability related to the presence of bedforms, shallow bars and sand sheets, and to the reworking of the dry bed between and at the end of individual flow events. The grain size distribution of the bedload indicates equal mobility; but bedload texture fluctuates, depicting the transport of coarser bar surfaces and of finer-grained anabranch surfaces as well as of the overall bed subsurface.
PB Elsevier
SN 0022-1694, ESSN: 1879-2707
YR 2013
FD 2013
LK https://hdl.handle.net/20.500.14352/34153
UL https://hdl.handle.net/20.500.14352/34153
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 28 abr 2024