CGRG Bibliography of Canadian Geomorphology
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Author : Gottesfeld, A.S.; and Tunnicliffe, J.
Date : 2003.
Title : Bed load measurements with a passive magnetic induction device.
Publication : Erosion and sediment transport measurement in rivers; technological and methodological advances. Edited by: Bogen, J.; Fergus, T.; and Walling, D.E. International Association of Hydrological Sciences Publication, International.
Issue : 283:
Page(s) : 211-221.
Abstract
The Bed load Movement Detector (BMD) is installed on the O'Ne-ell Creek, a gravel bed stream, with a forced pool-riffle morphology, in the upper Fraser River basin in northern British Columbia, Canada. The device records the passage of individual particles across the full width of the channel. At the peak of the 1999 nival flood sediment movement, approximately 3X10 (super 5) particle passages per hour were detected. The transport rate increases as the stage and water discharge increase. Bed load movement in this flood involved nearly all of the stream bed, but the point of most intense transport varied across the channel throughout the flood. During one week of flood discharge, 14.41X10 (super 6) particles were recorded passing the BMD. We estimate that this is approximately equivalent to 7.88 m (super 3) . Pulses of sediment movement are apparent at a variety of time scales ranging from diurnal to seconds. While the spasmodic character of the sediment transport is most pronounced at scales of 5 min to 1 h, there is no stable periodicity in the record.
Bibliography of Canadian Geomorphology