Suspended sediment source tracing at the Juksan Weir in the Yeongsan River using composite fingerprints

Lim, Yaeji; Kim, Jong Wook; Kim, Jin Kwan

doi:10.1016/j.quaint.2019.01.004

Cited by 4 publications

(1 citation statement)

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“…Understanding the distribution and properties of FRNs is necessary for the field application of the tracing technique using FRNs. However, several domestic studies have been conducted in only a few geographical areas [36,46,47], and hence, FRN-based tracing techniques have been poorly understood in South Korea. The objectives of this study were (1) to analyze the distribution of FRNs ( 137 Cs and 210 Pb ex ) concentrations along with soil organic matter (SOM) content in potential SS sources across various land use/land cover types within a small headwater catchment and (2) to differentiate these potential SS sources based on differences in FRN concentration and SOM content.…”

Section: Introductionmentioning

confidence: 99%

Differentiating Potential Suspended Sediment Sources Using Radionuclide Tracers and Soil Organic Matter Analysis in a Headwater Catchment in Chuncheon, South Korea

Nam,

Kim,

Jang

et al. 2024

Water

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Identifying potential sources of suspended sediment (SS) in headwater catchments is crucial for water quality management. To differentiate these potential SS sources, we investigated the distribution of two fallout radionuclides (FRNs), 137Cs and 210Pbex, using gamma spectrometry along with soil organic matter (SOM) analysis in a headwater catchment with five potential SS sources: cultivated land, non-harvested forest floor, eroded hillslope, harvested forest floor, and stream bank. The 137Cs and 210Pbex concentrations and the SOM content were considerably higher in the harvested forest floor materials than in the other four potential SS source materials. FRN concentrations revealed distinct properties according to the type of potential SS sources. Specifically, the combination of FRNs (with the effect of SOM content removed) associated with the mineral fraction and SOM showed distinguishable differences among the potential SS sources, except for no difference between cultivated land and eroded hillslope. Therefore, SOM and FRNs, or their combination, can be effective indices to differentiate or trace potential SS sources on various land use/land cover types within a catchment. Further field tests will allow the tracing techniques that bind FRNs with SOM to contribute to understanding SS transport from non-point sources within a catchment.

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Section: Introductionmentioning

confidence: 99%