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Earth System Science Data
Earth System Science Data
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Preprints
https://doi.org/10.5194/essd-2021-74
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2021-74
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints

  09 Mar 2021

09 Mar 2021

Review status: this preprint is currently under review for the journal ESSD.

Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011–2020)

Olivier Evrard1, Caroline Chartin1,2, J. Patrick Laceby1,3, Yuichi Onda4, Yoshifumi Wakiyama5, Atsushi Nakao6, Olivier Cerdan7, Hugo Lepage1,8, Hugo Jaegler1,8, Rosalie Vandromme7, Irène Lefèvre1, and Philippe Bonté1 Olivier Evrard et al.
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  • 1Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Unité Mixte de Recherche 8212 (CEA/CNRS/UVSQ), Université Paris-Saclay, Gif-sur-Yvette, France
  • 2Georges Lemaître Centre for Earth and Climate Research, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
  • 3Alberta Environment and Parks (AEP), Calgary, Alberta, Canada
  • 4Centre for Research in Isotopes and Environmental Dynamics (CRIED), Tsukuba University, Tsukuba, Japan
  • 5Institute of Environmental Radioactivity (IER), University of Fukushima, Fukushima, Japan
  • 6Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
  • 7Bureau de Recherches Géologiques et Minières (BRGM), Département Risques et Prévention, Orléans, France
  • 8Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SRTE/LRTA, SAME/LERCA, BP 3, 13115, Saint-Paul-lez-Durance, France
Received: 02 Mar 2021 – Accepted for review: 08 Mar 2021 – Discussion started: 09 Mar 2021

Abstract. Artificial radionuclides including radiocesium (134Cs and 137Cs) and radiosilver (110mAg) were released into the environment following the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. These particle-bound substances deposited on soils of Northeastern Japan located predominantly within a ~3000 km2 radioactive fallout plume and drained by several coastal rivers to the Pacific Ocean. The current dataset that can be accessed at https://doi.pangaea.de/10.1594/PANGAEA.928594 compiles gamma-emitting artificial radionuclide activities measured in 782 sediment samples collected from 27 to 71 locations during 16 fieldwork campaigns conducted in Japan between November 2011 and November 2020 in river catchments draining the main radioactive plume. This database may be useful to evaluate and anticipate the post-accidental redistribution of radionuclides in the environment and for the spatial validation of models simulating the transfer of radiocesium across continental landscapes.

How to cite. Evrard, O., Chartin, C., Laceby, J. P., Onda, Y., Wakiyama, Y., Nakao, A., Cerdan, O., Lepage, H., Jaegler, H., Vandromme, R., Lefèvre, I., and Bonté, P.: Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011–2020), Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2021-74, in review, 2021.

Olivier Evrard et al.

Status: open (until 20 May 2021)

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Olivier Evrard et al.

Olivier Evrard et al.

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Short summary
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 2011 and November 2020. In total, 782 sediment samples collected from 27 to 71 locations during 16 fieldwork campaigns were analysed. This provides a unique post-accidental dataset to better understand the environmental fate of radionuclides.
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