Author(s): I. Reid; J. T. Layman; L. E. Frostick

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Abstract: The Birkbeck bedload sampler is described and evaluated under field conditions. A submergedpressure-pillow responds to changes in both stream-stage and bedload sediment accumulating in apit-trap sunk into the stream-bed. Simultaneous changes in both pillow pressure and water-stageare continuously recorded. Subtraction of synchronous values gives a linear response in pressurehead proportional to the changing submerged mass of trapped sediment. Under both controlledlaboratory conditions and field installation, prototypes yield reproducible estimates of bedloadwith a standard error as small as 0.34 kg. The sampler is designed principally for installation insmall streams with flashy flood hydrographs.

DOI: https://doi.org/10.1080/00221688009499550

Year: 1980