ISET-R Newsletter
8/6/2015 Vol. 7, Issued By Onda Lab, University of Tsukuba

http://www.ied.tsukuba.ac.jp/hydrogeo/isetr/

IS E T - R

Grant-in-Aid for Scientiﬁc Research on Innovative Areas
the Ministry of Education, Culture, Sports, Science, and Technology Japan 2012.

Interdisciplinary Study on
Environmental Transfer of Radionuclides
from the Fukushima Daiichi NPP Accident

ISET-R Plenary Conference@ Cross Wave Makuhari May 25, 2015
The third “ISET-R Plenary Conference” was held at
Cross Wave Makuhari in Makuhari City, Chiba Prefecture on May 25, 2015.
Four years have passed since the FDNPP accident andthis third conference gathered eighty-eight participants.
It started with a remark by the head investigator, Prof.
Yuichi Onda, regarding future plans. Presentations on
recent developments of research were made by the principal investigator of each research group, followed bypresentations on future research plans by researchers
recruited from public. The conference ended with anoverall discussion. Since this is the fourth year of the ISET-R project, entering the latter half of the wholeproject, we are focusing on strengthening collaborative research.
Here is the list of four collaborative research themes confirmed at the last two conferences.
B01

B02

B03

B04

Estimation of deposition process of radionuclides based on the investigation, analysis
and clarification of chemical status at the time of release and impact assessment oftransfer [A01, A04] (Chief: Dr. Igarashi)
Clarification of circulation process of radionuclides
in forest environment and modeling of the process[A01, A03, A04] (Chief: Dr. Takenaka)
Clarification of transfer process of radionuclides
from terrestrial environment to marine
environment through river network [A02, A03,A04] (Chief: Dr. Onda)
Calculation of locational radiation exposure
based on radionuclide behavior and transfer inthe environment [A01, A02, A03, A04] (Chief: Dr.
Tsuruta)ISET-R Newsletter, Volume 7

Professor Onda explained developments and future plans of the fourmost critical issues confirmed at the last two conferences.
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Embodiment of new research fields by promoting
collaborative research
Promotion of international collaboration: ongoingcollaborative research with 11 overseas research institutions
A01 Effects of radionuclides on atmosphere

A02：Atmospheric Research Division, IRSN (Institut deRadioprotection et de Surete Nucleaire) France
Effects of radionuclides on marine environment

A03：Marine Research Division, IRSN France, Woods Hole Oceanographic Institution
Radionuclide transfer in terrestrial environment：Research Division on circulation of radionuclides in forest environment, ResearchDivision on river network, IRSN France

A04

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：LSCE France, University of Liverpool, University of Sheffield, Moscow State University
Existence form of radionuclides associated with transfer and development ofmeasurement techniques：University of Vienna
The others include
Department of Nuclear Sciences and Applications, IAEA: collaboration with A02, A03,and A04
Ukrainian Hydrometeorological Institute (UHMI): collaboration with A03 and A04
Fulfillment of fostering young researchers
Transmission of information

The main focus of this conference is to deepen understandings on the four collaborative research themes, which willbe the important theme in developing a new scientific research in the future. Therefore, all participants were encouraged
to take part in discussions in one of the four collaborative research issues.

Presentation on recent developments of research byprinciple investigators of each research group
Group A01-1

Group A01-2

Teruyuki NAKAJIMA , Japan Aerospace
Exploration Agency

Yasuhito IGARASHI, MeteorologicalResearch Institute“Understanding the atmospheric transport modelingand transfer process of fallout radionuclides”“Understanding atmospheric deposition, dispersion
process, and land interaction of radionuclides”

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ISET-R Newsletter, Volume 7Group A02-3

Group A02-4

Masatoshi YAMADA, Hirosaki University

Takashi ISHIMARU, Tokyo University ofMarine Science and Technology“Understanding the distribution status ofradionuclides in sea and seafloor sediment”“Understanding the transfer and concentration ofradionuclides in marine ecosystem”

Group A03-5

Group A03-6

Yuichi ONDA, University of Tsukuba

Chisato TAKENAKA, Nagoya University“Understanding the transfer process ofradionuclides associated with water andsediment transport”“Understanding the radionuclide circulation
process in terrestrial ecosystem”

Group A04-7

Group A04-8

Seiya NAGAO, Kanazawa University

Atsushi SHINOHARA, Osaka University“Development of microanalysis technology andchemical form of radionuclides associated withmigration”“Radionuclide measurement in various chemicalforms and development of technology”

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ISET-R Newsletter, Volume 7

Future research plans by researchers recruited from public
B01

B01

Akiyo YATAGAI, Research Institute for
Humanity and NatureIzumi NAKAI, Tokyo University of Science“Estimation of deposition process ofradionuclides based on three-dimensional
meteorological data”“Identifying chemical state of radioactive
microparticles emitted from the FDNPP
accident using multiple synchrotron radiation
X-ray analyses”

B02

B02

Yo s c h e n k o VA S Y L , F u k u s h i m aUniversity

Hiroaki KATO, University of Tsukuba“Study of stable cesium for long-term”“Large-scale assessment of initial interception
rate for radiocesium deposited on forest stands”

B02

B02

Junko TAKAHASHI, University ofTsukuba

Dan AOKI, Nagoya University“Analysis of interaction between cesium andphyto-components and research on physicaland chemical adsorption-desorption process”“Quantitative assessment of thinning impact onradiocesium circulation in forest ecosystems”

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B03

B03

Yukio KOIBUCHI, University of Tokyo

Chihiro YOSHIMURA, Tokyo Institute oftechnology“Clarification of radionuclide behavior in urban
region and urban coastal area”“Clarification of existence status and leaching systemof radiocesium in natural underwater environment
using comprehensive analysis approach”

B03

B03

Jing ZHANG, University of Toyama

Yusuke UCHIYAMA, Kobe University“Analysis of migration process of radiocesium
focusing on river-ocean interaction in brackishwater”“Development of simultaneous analysis system ofsuspended and dissolved cesium transport
toward assessment of radionuclide transfer inmarine environment”

B04
Yoshitaka ITOW, Nagoya University“Construction of a metadatabase for measuring
radiation derived from FDNPP accident andestimation of initial exposure to radiation”
Presentation materials forthis conference are postedon the Members Only Pageof our ISET-R website at
http://www.ied.tsukuba.ac.
jp/hydrogeo/isetr/.

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Poster session and general discussion
Participants took part in discussions in one of the four multidisciplinary projects of chemical status (B01),forest (B02), terrestrial environment to rivers (B03), and calculation of radiation exposure (B04). Group discussions started with self-introductions by members. At the end, presentations were made on the results ofdiscussions by chiefs of each collaborative research group.

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ISET-R Newsletter, Volume 7

mts fronemts
Comipancitrpa◆Group discussion was made beyond the framework of research groups,
which was very meaningful. In the chemical status group I participated,
information on the initial emission of radionuclides from the power plant andthe second emission including resuspension were shared. I hope this trialcontinues in the next conference.
(Yukihiko Sato, B01)
◆In the past plenary sessions, discussions were made within each researchgroup based on their study fields, however, this session tried a new approachof going beyond research fields and making a new framework to solve
critical research issues. The success of this approach made me think that thefuture interdisciplinary research will be prosperous.
(Yoshifumi Wakiyama, B03)
◆As actively engaging participation and constructive discussion between
highly regarded experts, professors, and researchers from various fields ofstudy is the purpose of the annual ISET-R meeting, I was able to broaden myunderstanding on an array of current research progresses and result on theFukushima Daiichi Nuclear Power Plant accident.
(Yoo Nahyun, B04)

The ISET-R Plenary Conference of 2015 closed with a comment by Professor Gamo, one of theresearch area advisors. “Although the conference was long, lasted for six hours, it was extremelyrich in content. I hope that the members make a constant eﬀort to keep up a good work and develop the work further until the ﬁnal compilation year. We talked about the importance of ʻcollaborationʼ with other research areas in the last conference, and I felt that the collaboration
among research areas penetrated so much in this conference, which is the greatest achievementin this new scientiﬁc research.”

ISET-R（Coordination Committee） Center for Research in Isotopes and Environmental Dynamics
Office：1-1-1 A-405 Tennodai TSUKUBA, IBARAKI 305-8572
TEL＆FAX：+81-29-853-4226

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