Graduate Thesis Or Dissertation
 

Measuring sediment transport rates using tracer gravel and RFID technology

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/cf95jm05r

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  • Rates of sediment transport were determined using tracer gravel and a RFID antenna array at Oak Creek (Oregon) to compare a new method with an existing transport relation created from data previously collected in the same study reach. Close to 3,000 tracers were deployed throughout the study reach and were composed of particles from four different class sizes, including 11–16 mm, 16–32 mm, 32–64 mm, and 64–101.5 mm. Tracer positions were monitored between 2016–2022 using three antennas, stretching across the stream channel, on the bed of the stream and a handheld antenna was used to locate tracer positions between antennas and downstream of the array. Transport rates were calculated from inter-arrival times of pairs of tracers moving in and out of the readable range of an antenna. Results showed that for any given discharge, transport rates for tracer gravel were lower than what was expected from the other transport relation for the reach. Specifically, the smaller two size classes displayed transport rates lower by an order of magnitude or greater than what was expected, while the larger two sizes classes produced rates inside of an order of magnitude lower. Several problems with the methodology presented themselves over the course of data collection but did not affect the quality of the data gathered. Results from this study build on a plethora of previous work using tracer particles over the last few decades and this methodology has the potential to be used more widely and on larger stream systems.
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  • 75 pages

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file details LewisLoganL2023.pdf 2023-04-13 Público Baixar