ISET-R Newsletter
8/18/2015 Vol. 8, Issued By Onda Lab, University of Tsukuba

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

JRR Award at ICRR 2015 has been given to Retrieval of
atmospheric radiocesium after the Fukushima accident byanalyzing filter-tapes of operational air quality monitoringsites., by H. Tsuruta, Y. Oura, M. Ebihara, T .Ohara, and T.
Nakajima, which Mr. Tsuruta, who is the research collaboratorof Group A01-1, gave the oral presentation at International
Congress of Radiation Research 2015 held from May 25, 2015
to May 29, 2015, by Journal of Radiation Research (JRR) as
one of 130 especially brilliant oral presentations given atICRR 2015.
This award means the three Groups (A01-1, A04-7, andA04-8) in ISET-R achieved excellent results from theircollaborative research, in other words, results from the newinterdisciplinary study, and which is the exact purpose ofISET-R.

Outline of this research by Mr. Tsuruta■ The purpose of this research is to clarify the space-time distribution of radionuclides released
into the atmosphere just after the Tokyo Electric Power Company Fukushima Nuclear Power Station accident, which has been unknown until now, by measuring radionuclides in suspended particulate matter (SPM) collected every hour on filter-tapes installed in SPM mass monitors set by eachmunicipality in Japan for atmospheric environment monitoring network. We strongly expect that thedataset can be used to reduce the uncertainty of internal exposure from inhalation, of the calculated time-series emission rates from the sources, and of atmospheric transport models.

ISET-R Newsletter, Volume 8

Comments from this award winner, Mr. Tsuruta
It’ s a great honor to receive such a wonderful award. I didn’ tunderstand what happened to me when the email was sent noticing
our research received this award, because I attended this ICRR for
the first time. And I received those comments listed below fromcoauthors after I noticed this award. Then, I have realized that we
could submit together this paper, thanks to the staffs of Prof.
Nakajima’ s Laboratory in Atmosphere and Ocean ResearchInstitute, the University of Tokyo, who treated and merged huge data
to create complicated figures under strong encouragement by thecoauthors. I also thank to anonymous reviewers who gave us manyMr. Haruo Tsuruta
useful comments, which impressed us deeply. This research hasatstarted since September 2011, when we proposed to the Ministry of Kyoto International Conference Center
Education, Culture, Sports, Sciences and Technology (MEXT), andthe Ministry of the Environment, Japan, to measure radionuclides in SPM collected on filter-tapes
just after the accident at the air quality monitoring stations. After that, we could have continued totackle this research as one of the programs in the ISET-R project, and as commissioned projects
supported by the Ministry of the Environment, and the Nuclear Regulation Authority. Taking thisopportunity, I would like to thank to all the local governments in eastern Japan, who kept the usedfilter-tapes installed in SPM mass monitors after the accident, and kindly offered us through therequest from the Ministry of the Environment. And one year ago, Prof. Moriguchi, the Universityof Tokyo, who is an advisor of ISET-R, asked to me “How would you feel if you present thisresearch at ICRR2015?” His advice encouraged me a lot. We would like to express our sincere
thanks to Prof. Onda, the Head Investigator of ISET-R, and many members who have supported
our research. We would like to ask all of you continued support and encouragement, because ourresearch will be more and more important in cooperation with researchers in different fields, inaddition to local governments and the Ministry of the Environment.

Congratulation on the award!!
We sincerely expect further success in the future!!
Messages of congratulations from coauthors participating in this research
Principal Investigator for A01-1：
Dr. Teruyuki Nakajima

Co-Investigator for A04-7：
Dr. Mitsuru Ebihara

Co-Investigator for A04-8：
Dr. Yasuji OuraCongratulations.
I recognised again that it
is important to keep on
making efforts according
to our own beliefs.
Let’s cerebrate soon.

Thank you for letting us
know this good news.
It will be good future
momentum.

Thanks to the powerfulleadership of Mr. Tsuruta, we
could gain such a goodresult. It will be our pleasurethat those gained data which
will be open to the public
soon, would be used indiverse fields.

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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