Evaluation of aDcps for suspended sediment transport monitoring, Fraser River, British Columbia

Resource type
Thesis type
(Thesis) M.Sc.
Date created
2012-08-13
Authors/Contributors
Abstract
Our ability to predict the timing and quantity of suspended sediment transport is limited because fine sand, silt and clay delivery are supply-limited, requiring empirical modelling approaches of limited temporal stability. Here, I evaluate a 300 kHz side-looking acoustic Doppler current profiler (aDcp), mounted in the Fraser River, BC, for continuous measurement of suspended sediment flux. I also evaluate a downward-looking 600 kHz aDcp at the same site. Both aDcps are calibrated against conventional bottle samples obtained with a USGS P63 sediment sampler. The results suggest that it is possible to estimate total suspended sediment flux using a 300 kHz side-looking aDcp in the Fraser River, but that it underestimates observed flux. The calibration of the 600 kHz aDcp is strong (R2=0.72), but it underestimates total sediment flux at low-moderate flows and overestimates flux at high flows.
Document
Identifier
etd7381
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The author granted permission for the file to be printed and for the text to be copied and pasted.
Scholarly level
Supervisor or Senior Supervisor
Thesis advisor: Venditti, Jeremy
Member of collection
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etd7381_MAttard.pdf 3.31 MB