Post-conference publication 01 Aug 2019
Post-conference publication | 01 Aug 2019
Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes
Alexei V. Konoplev et al.
Related authors
Alexei V. Konoplev, Maxim M. Ivanov, Valentin N. Golosov, and Evgenyi A. Konstantinov
Proc. IAHS, 381, 95–99, https://doi.org/10.5194/piahs-381-95-2019, https://doi.org/10.5194/piahs-381-95-2019, 2019
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The method for reconstructing the long-term dependence of radionuclide concentrations in rivers and reservoirs based on their vertical distribution in bottom sediments is proposed. Reconstructed time dependencies of particulate and dissolved Cs-137 activity concentrations in the Upa River were found to be described well by the semi-empirical “diffusion” model.
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This dataset provides an original compilation of radioactive dose rates and artificial radionuclide activities in sediment deposited after floods in the rivers draining the main radioactive pollution plume in Fukushuma, Japan, between November
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Alexei V. Konoplev, Maxim M. Ivanov, Valentin N. Golosov, and Evgenyi A. Konstantinov
Proc. IAHS, 381, 95–99, https://doi.org/10.5194/piahs-381-95-2019, https://doi.org/10.5194/piahs-381-95-2019, 2019
Short summary
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The method for reconstructing the long-term dependence of radionuclide concentrations in rivers and reservoirs based on their vertical distribution in bottom sediments is proposed. Reconstructed time dependencies of particulate and dissolved Cs-137 activity concentrations in the Upa River were found to be described well by the semi-empirical “diffusion” model.
Yoshifumi Wakiyama, Alexei Konoplev, Toshihiro Wada, Tsugiko Takase, Yasunori Igarashi, Kenji Nanba, and Ian Byrnes
Proc. IAHS, 381, 101–106, https://doi.org/10.5194/piahs-381-101-2019, https://doi.org/10.5194/piahs-381-101-2019, 2019
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Short summary
A number of sites in the Fukushima contaminated area were surveyed for long-term changes in dose equivalent rate above the soil surface during 2015–2017 using D-shuttle dosimeters. D-shuttle readings in most cases decreased faster than if due to radioactive decay only. More rapid decrease can be explained by natural attenuation processes, such as erosion of the topsoil, the vertical migration of radionuclides in the soil and the deposition of cleaner sediments transported by surface runoff.
A number of sites in the Fukushima contaminated area were surveyed for long-term changes in dose...