Radioactive dose rates and fallout radionuclide activities in sediment deposits along rivers draining the main Fukushima plume, Japan


This dataset compiles all the radioactive dose rates measurements and the anthropogenic fallout radionuclides analysed in recent sediment deposits collected in the coastal catchments draining the main radioactive plume of Fukushima, Japan (2011-2020).Gamma-emitting fallout radionuclides activities (Cs-137, Cs-137, Ag-110m) were determined by gamma spectrometry using HPGe detectors (Canberra/Ortec), and activities were decay-corrected to the sampling date.Uncertainties reached ca. 5-10% on Cs-134 and Cs-137 activities, and ca. 15-20% on Ag-110m activities at the 95% confidence level.Radiation dose rates were systematically measured in the field (at 1-cm height from the soil) using a radiameter (LB123 D-H10, Berthold Technologies) in recent sediment drape deposits and in nearby soils along rivers (i.e. in a 10 to 20 m wide area along rivers).This data was collected in the framework of the TOFU (Agence Nationale de la Recherche; grant no. ANR-11-JAPN-001) and the AMORAD (Programme des Investissements d'Avenir; grant no. ANR-11-RSNR-0002) projects. The support of Centre Nationalde la Recherche Scientifique (CNRS, France) and Japan Society for the Promotion of Science (JSPS) is also gratefully acknowledged (grant no. PRC CNRS-JSPS 2019-2020, no. 10; CNRS International Research Project - IRP -MITATE).

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Metadata Access
Creator Evrard, Olivier ; Chartin, Caroline; Laceby, J Patrick ; Onda, Yuichi ; Wakiyama, Yoshifumi ; Nakao, Atsushi (ORCID: 0000-0001-8405-234X); Cerdan, Olivier ; Lepage, Hugo (ORCID: 0000-0002-2260-859X); Jaegler, Hugo; Vandromme, Rosalie; Lefèvre, Irène; Bonté, Philippe
Publisher PANGAEA
Publication Year 2021
Funding Reference Agence Nationale de la Recherche, ANR 11 JAPN 001
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 5299 data points
Discipline Earth System Research
Spatial Coverage (140.384W, 37.428S, 141.030E, 38.097N); Abukuma River, Fukushima, Japan; Ukedo River, Fukushima, Japan; Kuchibuto River, Fukushima, Japan; Mano River, Fukushima, Japan; Niida River, Fukushima, Japan; Mano River, Fukushima Prefecture, Japan; Niida River, Fukushima Prefecture, Japan; Ota River, Fukushima, Japan; Uda River, Fukushima, Japan; Odaka River, Fukushima, Japan
Temporal Coverage Begin 2011-11-17T00:00:00Z
Temporal Coverage End 2020-10-31T00:00:00Z