Welcome to ERAN

What is ERAN?

ERAN (Environmental Radioactivity Research Network Center)  has been recognized by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) as a Joint Usage / Research Center since 2019.
ERAN consists of six organizations: CRiED of Univ. of Tsukuba, IER of Fukushima Univ., and IREM of Hirosaki Univ. as network centers, and JAEA, QST, and NIES as cooperative network centers.
We are convinced that the results of the joint research and international efforts will be critical to the recovery and possible future events.

Pick Up Topic

Radionuclides from the Fukushima Daiichi Nuclear Power Plant in terrestrial systems

Nat Rev Earth Environ (2020).
Onda, Y., Taniguchi, K., Yoshimura, K., Kato, H., Takahashi, J., Wakiyama, Y., Coppin, F., Smith, H.

Free-to-Read this paper via https://rdcu.be/b9iAz

In this study, more than 210 research papers on terrestrial environmental monitoring in Fukushima were comprehensively reviewed to elucidate the migration of radioactive cesium-137 (137Cs) over terrestrial areas, to reveal the actual situation of terrestrial contamination and the overall picture of environmental recovery based on the results. A significant decrease in the concentration of 137Cs on the ground was found to have a causal effect on the reduction of 137Cs concentrations in rivers, although there is still an abundance of 137Cs on terrestrial areas.

Hot Topics


Onda, Y., Taniguchi, K., Yoshimura, K., Kato, H., Takahashi, J., Wakiyama, Y., Coppin, F., Smith, H., Radionuclides from the Fukushima Daiichi Nuclear Power Plant in terrestrial systems, Nature Review Earth and Environment (2020)


Takata, H., Aono, T., Aoyama, M., Inoue, M., Kaeriyama, H., Suzuki, S., Tsuruta, T., Wada, T., Wakiyama, Y., Suspended particle–water interactions increase dissolved 137Cs activities in the nearshore seawater during typhoon Hagibis, Environmental Science & Technology, August 2020


Begum, Z.A., Rahman, I.M.M., Ishii, K., Tsukada, H., Hasegawa, H., Dynamics of Strontium and geochemically correlated elements in soil during washing remediation with eco-complaint chelators, Journal of Environmental Management, Vol 259, April 2020, 110018


Teramage, M. T., Onda, Y., Kato, H., Sun, X. Impact of forest thinning on the dynamics of litterfall derived 137Cs deposits in coniferous forest floor after Fukushima accident, Chemosphere Volume 239, January 2020, 124777


Kurihara, E., Takehara, M., Suetake, M., Ikehara, R., Komiya, T., Morooka, K., Takami, R., Yamasaki, S., Ohnuki, T., Horie, K., Takehara, M., Law, G.T.W., Bower, W., W. Mosselmans, J.F., Warnicke, P., Grambow, B., Ewing, R.C., Utsunomiya, S., Particulate plutonium released from the Fukushima Daiichi meltdowns, Science of the Total Environment, Vol 743, Mar 2020, 140539 (2020)


Omori, Y., Tamakuma, Y., Nugraha, E.D., Suzuki, T., Saputra, M.A., Hosoda, M., Tokonami, S., Impact of wind speed on response of diffusion-type radon-thoron detectors to thoron, International Journal of Environmental Research and Public Health, Vol 17, 9, 1 May 2020, 3178


Taniguchi, K., Onda, Y., Smith, H.G., Blake, W., Yoshimura, K., Yamashiki, Y., Kuramoto, T., Saito, K. Transport and Redistribution of Radiocesium in Fukushima Fallout through Rivers, Environmental Science & Technology, 53, 21, 12339–12347, Sep, 2019


Wakiyama, Y., Onda, Y., Yoshimura, K., Igarashi, Y., Kato, H. Land use types control solid wash-off rate and entrainment coefficient of Fukushima-derived 137Cs, and their time dependence, Journal of Environmental Radioactivity Volume 210, December 2019, 105990

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2020.08.25    Our website has been updated‼
2020.05.20   2020 ERAN Kick-off Meeting was held.
2020.04.05   Annual Report meeting of 2019 was held.
2020.02.26   Notice of WEB Annual Meeting of 2019.


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