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http://dx.doi.org/10.3741/JKWRA.2022.55.1.43

Clustering of sediment characteristics in South Korean rivers and its expanded application strategy to H-ADCP based suspended sediment concentration monitoring technique  

Noh, Hyoseob (Department of Civil and Environmental Engineering, Seoul National University)
Son, GeunSoo (Advanced Infra Division, Korea Institute of Hydrological Survey)
Kim, Dongsu (Department of Civil and Environmental Engineering, Dankook University)
Park, Yong Sung (Department of Civil and Environmental Engineering, Seoul National University)
Publication Information
Journal of Korea Water Resources Association / v.55, no.1, 2022 , pp. 43-57 More about this Journal
Abstract
Advances in measurement techniques have reduced measurement costs and enhanced safety resulting in less uncertainty. For example, an acoustic doppler current profiler (ADCP) based suspended sediment concentration (SSC) measurement technique is being accepted as an alternative to the conventional data collection method. In Korean rivers, horizontal ADCPs (H-ADCPs) are mounted on the automatic discharge monitoring stations, where SSC can be measured using the backscatter of ADCPs. However, automatic discharge monitoring stations and sediment monitoring stations do not always coincide which hinders the application of the new techniques that are not feasible to some stations. This work presents and analyzes H-ADCP-SSC models for 9 discharge monitoring stations in Korean rivers. In application of the Gaussian mixture model (GMM) to sediment-related variables (catchment area, particle size distributions of suspended sediment and bed material, water discharge-sediment discharge curves) from 44 sediment monitoring stations, it is revealed that those characteristics can distinguish sediment monitoring stations regionally. Linking the two results, we propose a protocol determining the H-ADCP-SSC model where no H-ADCP-SSC model is available.
Keywords
Clustering; H-ADCP; Suspended sediment concentration;
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Times Cited By KSCI : 2  (Citation Analysis)
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