Show simple item record Damià en_US Ramon J. en_US Chris N. en_US 2010-11-22T16:27:08Z 2010-11-22T16:27:08Z 2008 en_US
dc.identifier en_US
dc.identifier.citation Vericat , D , Batalla , R J & Gibbins , C N 2008 , ' Sediment entrainment and depletion from patches of fine material in a gravel-bed river ' Water Resources Research . , 10.1029/2008WR007028 en_US
dc.identifier.other PURE: 153745 en_US
dc.identifier.other dspace: 2160/5928 en_US
dc.description.abstract This paper presents the results of experiments in which a portable flume was used to manipulate hydraulic conditions and create bed load transport in a gravel bed river. Flume data are coupled with those from Helley-Smith samples to assess bed load characteristics at shear stresses ranging from 5 to 60 N/m2. Experiments demonstrate that patches of fine sediment control both the intensity and duration of bed load under hydraulic conditions characteristic of the early stages of floods. The experiments allow quantifying bed load at the entrainment threshold, providing the first empirical evidence that marginal bed load transport can be attributed to the mobilization of sediments from patches. Bed load transport was recorded consistently once shear stress exceeded 5 N/m2. The experiments produced low bed load rates ( en_US
dc.relation.ispartof Water Resources Research en_US
dc.title Sediment entrainment and depletion from patches of fine material in a gravel-bed river en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Geography & Earth Sciences en_US

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