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Evrard, Olivier; Chartin, Caroline; Laceby, J Patrick; Onda, Yuichi; Wakiyama, Yoshifumi; Nakao, Atsushi; Cerdan, Olivier; Lepage, Hugo; Jaegler, Hugo; Vandromme, Rosalie; Lefèvre, Irène; Bonté, Philippe (2021): Radioactive dose rates and fallout radionuclide activities in sediment deposits along rivers draining the main Fukushima plume, Japan. PANGAEA,

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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).
nuclear accident; radiocesium; radiocesium; radionuclide; river pollution
Related to:
Evrard, Olivier; Chartin, Caroline; Laceby, J Patrick; Onda, Yuichi; Wakiyama, Yoshifumi; Nakao, Atsushi; Cerdan, Olivier; Lepage, Hugo; Jaegler, Hugo; Vandromme, Rosalie; Lefèvre, Irène; Bonté, Philippe (submitted): Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011–2020). Earth System Science Data
Source data set:
Chartin, Caroline; Evrard, Olivier; Laceby, J Patrick; Onda, Yuichi; Ottlé, Catherine; Lefèvre, Irène; Cerdan, Olivier (2017): The impact of typhoons on sediment connectivity: lessons learnt from contaminated coastal catchments of the Fukushima Prefecture (Japan). Earth Surface Processes and Landforms, 42(2), 306-317,
Chartin, Caroline; Evrard, Olivier; Onda, Yuichi; Patin, Jeremy; Lefèvre, Irène; Ottlé, Catherine; Ayrault, Sophie; Lepage, Hugo; Bonté, Philippe (2013): Tracking the early dispersion of contaminated sediment along rivers draining the Fukushima radioactive pollution plume. Anthropocene, 1, 23-34,
Evrard, Olivier; Chartin, Caroline; Onda, Yuichi; Lepage, Hugo; Cerdan, Olivier; Lefèvre, Irène; Ayrault, Sophie (2015): Renewed soil erosion and remobilisation of radioactive sediment in Fukushima coastal rivers after the 2013 typhoons. Scientific Reports, 4(1),
Evrard, Olivier; Chartin, Caroline; Onda, Yuichi; Patin, Jeremy; Lepage, Hugo; Lefèvre, Irène; Ayrault, Sophie; Ottlé, Catherine; Bonté, Philippe (2013): Evolution of radioactive dose rates in fresh sediment deposits along coastal rivers draining Fukushima contamination plume. Scientific Reports, 3(1),
Evrard, Olivier; Durand, Roxanne; Nakao, Atsushi; Laceby, J Patrick; Lefèvre, Irène; Wakiyama, Yoshifumi; Hayashi, Seiji; Asanuma-Brice, Cécile; Cerdan, Olivier (2020): Impact of the 2019 typhoons on sediment source contributions and radiocesium concentrations in rivers draining the Fukushima radioactive plume, Japan. Comptes Rendus Geoscience, 352(3), 199-211,
Median Latitude: 37.653677 * Median Longitude: 140.836541 * South-bound Latitude: 37.428100 * West-bound Longitude: 140.383600 * North-bound Latitude: 38.097345 * East-bound Longitude: 141.029526
Date/Time Start: 2011-11-17T00:00:00 * Date/Time End: 2020-10-31T00:00:00
Minimum HEIGHT above ground: 0.01 m * Maximum HEIGHT above ground: 0.01 m
FAL_010 (FAL010) * Latitude: 37.596300 * Longitude: 140.514300 * Date/Time: 2011-11-17T00:00:00 * Location: Abukuma River, Fukushima, Japan * Comment: Campaign 1
FAL_025 (FAL025) * Latitude: 37.594600 * Longitude: 140.462300 * Date/Time: 2011-11-18T00:00:00 * Location: Abukuma River, Fukushima, Japan * Comment: Campaign 1
FAL_071 (FAL071) * Latitude: 38.096800 * Longitude: 140.871300 * Date/Time: 2011-11-20T00:00:00 * Location: Abukuma River, Fukushima, Japan * Comment: Campaign 1
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventEvrard, Olivier
2Date/Time of eventDate/TimeEvrard, Olivier
3DateDateEvrard, OlivierANALYSIS DATE
4CampaignCampaignEvrard, Olivier
5RiverRiverEvrard, Olivier
6Latitude of eventLatitudeEvrard, Olivier
7Longitude of eventLongitudeEvrard, Olivier
8HEIGHT above groundHeightmEvrard, OlivierGeocode
9Dose rate, soilD soilµSv/hEvrard, OlivierRadiameter (LB123 D-H10, Berthold Technologies)
10Dose rate, sedimentD sedµSv/hEvrard, OlivierRadiameter (LB123 D-H10, Berthold Technologies)
11Caesium-137, activity per mass137CsBq/kgEvrard, OlivierGamma spectrometry, HPGe detectors (Canberra/Ortec)
12Caesium-134 activity per mass134CsBq/kgEvrard, OlivierGamma spectrometry, HPGe detectors (Canberra/Ortec)
13Silver-110m, activity per mass110mAgBq/kgEvrard, OlivierGamma spectrometry, HPGe detectors (Canberra/Ortec)
5299 data points

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