Sediment transport processes in a reservoir–catchment system inferred from sediment trap observations and fallout radionuclides
| Autor: | Seiya Nagao, Kenji Kashiwaya, Taeko Itono, Masayoshi Yamamoto, Shinya Ochiai |
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| Rok vydání: | 2014 |
| Předmět: |
Hydrology
geography Radionuclide geography.geographical_feature_category Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Drainage basin Sediment Sediment trap (geology) Trap (plumbing) Pollution Deposition (geology) Analytical Chemistry Nuclear Energy and Engineering Environmental science Radiology Nuclear Medicine and imaging Precipitation Sediment transport Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 303:1497-1501 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | Sediment transport processes and their responses to hydrological conditions were investigated based on sediment trap observations in a reservoir–catchment system in Japan. The annual discharge rate of 134Cs from the catchment was much higher than that of 137Cs. This difference suggests that 134Cs freshly derived from the Fukushima Dai-ichi Nuclear Power Plant accident accumulated in the surface soil, which acted as a major sediment source. The seasonal changes in the 137Cs/210Pbex ratio in the trap samples corresponded well to the precipitation changes. This suggests that the precipitation intensity affects the source of eroded sediment in the catchment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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