DOI: 10.5281/zenodo.7233904
title: Temporal evolution of plutonium concentrations and isotopic ratios, cesium activity concentrations, granulometric parameters and organic matter properties in the Ukedo–Takase Rivers draining the Difficult-To-Return Zone in Fukushima, Japan (2013–2020)

description: The current dataset was compiled to investigate the temporal evolution of plutonium concentrations, isotopic ratios and radiocesium activity concentrations in flood sediment deposits collected in the Ukedo and Takase Rivers, draining a part of the Difficult-to-Return Zone, in Fukushima Prefecture, from 2013 to 2020. These radionuclides were released in large quantities during the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident that occurred in March 2011 in Northeastern Japan (Steinhauser et al., 2014). Models showed that ~ 80 % of radionuclide releases occurred over the ocean (Mathieu et al., 2018; MEXT, 2011). The radioactive plume is drained by several coastal rivers to the Pacific Ocean, and sediment-bound radionuclide transfers in these rivers are mainly controlled by the occurrence of typhoons and tropical storms (Evrard et al., 2021). The objective of the research relying on the current database is to investigate the temporal changes in Pu signatures that occurred between 2013 and 2020 in flood sediment deposits collected in the Ukedo and the Takase Rivers, and to identify potential factors controlling these changes by the means of statistical approach. The current dataset comprises an Excel file including the variables description, and the data itself.
description: {"references": ["Diacre, A., Chalaux, T., Burban, S., Gauthier, C., Hubert, A., Humbert, A.-C., Lefevre, I., Faure, A.-L., Pointurier, F., Evrard, O., in prep. Temporal evolution of plutonium concentrations and isotopic ratios in the Ukedo -Takase Rivers draining the Difficult-To-Return Zone in Fukushima, Japan (2013\u20132020). Environmental Pollution.", "Evrard, O., Pointurier, F., Onda, Y., Chartin, C., Hubert, A., Lepage, H., Pottin, A.-C., Lef\u00e8vre, I., Bont\u00e9, P., Laceby, J.P., Ayrault, S., 2014. Novel Insights into Fukushima Nuclear Accident from Isotopic Evidence of Plutonium Spread along Coastal Rivers. Environ. Sci. Technol. 48, 9334\u20139340. https://doi.org/10.1021/es501890n", "Jaegler, H., Pointurier, F., Onda, Y., Hubert, A., Laceby, J.P., Cirella, M., Evrard, O., 2018. Plutonium isotopic signatures in soils and their variation (2011-2014) in sediment transiting a coastal river in the Fukushima Prefecture, Japan. Environmental Pollution 240, 167\u2013176. https://doi.org/10.1016/j.envpol.2018.04.094", "Jaegler, H., Pointurier, F., Diez-Fern\u00e1ndez, S., Gourgiotis, A., Isnard, H., Hayashi, S., Tsuji, H., Onda, Y., Hubert, A., Laceby, J.P., Evrard, O., 2019. Reconstruction of uranium and plutonium isotopic signatures in sediment accumulated in the Mano Dam reservoir, Japan, before and after the Fukushima nuclear accident. Chemosphere 225, 849\u2013858. https://doi.org/10.1016/j.chemosphere.2019.03.064", "Schneider, S., Bister, S., Christl, M., Hori, M., Shozugawa, K., Synal, H.-A., Steinhauser, G., Walther, C., 2017. Radionuclide pollution inside the Fukushima Daiichi exclusion zone, part 2: Forensic search for the \"Forgotten\" contaminants Uranium-236 and plutonium. Applied Geochemistry, Transformation and Fate of Natural and Anthropogenic Radionuclides in the Environments 85, 194\u2013200. https://doi.org/10.1016/j.apgeochem.2017.05.022", "Yang, G., Tazoe, H., Hayano, K., Okayama, K., Yamada, M., 2017. Isotopic compositions of 236U, 239Pu, and 240Pu in soil contaminated by the Fukushima Daiichi Nuclear Power Plant accident. Sci Rep 7, 13619. https://doi.org/10.1038/s41598-017-13998-6", "Evrard, O., Chartin, C., Laceby, J.P., Onda, Y., Wakiyama, Y., Nakao, A., Cerdan, O., Lepage, H., Jaegler, H., Vandromme, R., Lef\u00e8vre, I., Bont\u00e9, P., 2021. Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011\u20132020). Earth System Science Data 13, 2555\u20132560. https://doi.org/10.5194/essd-13-2555-2021", "Mathieu, A., Kajino, M., Korsakissok, I., P\u00e9rillat, R., Qu\u00e9lo, D., Qu\u00e9rel, A., Saunier, O., Sekiyama, T.T., Igarashi, Y., Didier, D., 2018. Fukushima Daiichi\u2013derived radionuclides in the atmosphere, transport and deposition in Japan: A review. Applied Geochemistry 91, 122\u2013139. https://doi.org/10.1016/j.apgeochem.2018.01.002", "MEXT, 2011. Results of the Fourth Airborne Monitoring Survey by MEXT.", "Steinhauser, G., Brandl, A., Johnson, T.E., 2014. Comparison of the Chernobyl and Fukushima nuclear accidents: A review of the environmental impacts. Science of The Total Environment 470\u2013471, 800\u2013817. https://doi.org/10.1016/j.scitotenv.2013.10.029"]}