Articles | Volume 381
Proc. IAHS, 381, 121–126, 2019
https://doi.org/10.5194/piahs-381-121-2019
Proc. IAHS, 381, 121–126, 2019
https://doi.org/10.5194/piahs-381-121-2019

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.

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Reconstruction of long-term dynamics of Chernobyl-derived 137Cs in the Upa River using bottom sediments in the Scheckino reservoir and semi-empirical modelling
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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Temporal trends of 137Cs activity concentration in pond waters in the vicinity of Fukushima Dai-ichi nuclear power plant
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

Cited articles

Beresford, N., Fesenko, S., Konoplev, A., Skuterud, L., Smith, J. T., and Voigt, G.: Thirty years after the Chernobyl accident: what lessons have we learnt?, J. Environ. Radioactiv., 157, 77–89, https://doi.org/10.1016/j.jenvrad.2016.02.003, 2016. 
Čemusová, Z., Ekendahl, D., and Judas, L.: Testing of the D-Shuttle personal dosimeter, Radiat. Meas., 106, 214–217, https://doi.org/10.1016/j.radmeas.2017.03.011, 2017. 
Hirose, K.: 2011 Fukushima Dai-ichi nuclear power plant accident: summary of regional radioactive deposition monitoring results, J. Environ. Radioactiv., 111, 13–17, https://doi.org/10.1016/j.jenvrad.2011.09.003, 2012. 
IAEA: Environmental consequences of the Chernobyl accident and their remediation: twenty years of experience. Report of the Chernobyl Forum Expert Group “Environment”, IAEA, Vienna, Austria, 166 pp., 2006a. 
IAEA: Applicability of Monitored Natural Attenuation at Radioactively Contaminated Sites. Technical Reports Series No. 445, IAEA, Vienna, Austria, 105 pp., 2006b. 
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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.