NAGAO Seiya

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Name
NAGAO Seiya
Affiliation
Kanazawa University
Section
Institute of Nature and Environmental Technology, Institute of Nature and Environmental Technology
Degree
Doctor(Fisheries Science)(Hokkaido University)

Research Areas

 
 

Academic & Professional Experience

 
1990
 - 
2001
: Reseacher, Japan Atomic Energy Research Institute 
 
2001
   
 
-: - Associate Professor, Graduate School of Environmental Earth Sceince, Hokkaido University 
 

Education

 
 
 - 
1990
Fisheries chemistry, Graduate School, Division of Fisheries, Hokkaido University
 
 
 - 
1984
Earth Science, Faculty of Science, Hirosaki University
 

Published Papers

 
Inoue, M., Yamashita, S., Takehara, R., Miki, S. and Nagao, S.
Applied Radiation and Isotopes   145 187-192   Mar 2019   [Refereed]
Katsuta, N., Miyata, Y., Murakami, T., Mino, Y., Naito, S., Yasuda, K., Ochiai, S., Abe, O., Yasuda, A., Morimoto, M., Kawakami, S. and Nagao, S.
Applied Geochemistry   102 34-43   Jan 2019   [Refereed]
Inoue, M., Morokado, T., Fujimoto, K., Miki, S., Kofuji, H., Isoda, Y. and Nagao, S.
Journal of Environmental Radioactivity   192 580-586   May 2018   [Refereed]
Suzuki, K., Watanabe, S., Yuasa, S., Yamashita, Y., Arai, H., Tanaka, H., Kuge, T., Mori, B., Tsunoda, K., Nohara, S., Iwasa, Y., Minai, Y., Okada, Y. and Nagao, S.
Science of the Total Environment   622-623 1153-1164   May 2018   [Refereed]
Ochiai, S., Lin, J.-C., Jen, C.-H., Nagao, S., Kashiwaya, K., Ochiai, S., Lin, J.-C., Jen, C.-H., Nagao, S. and Kashiwaya, K.
Nuclear Chemistry   316(3) 1181-1187   May 2018   [Refereed]
Koarashi, J., Nishimura, S., Atarashi-Andoh, M., Matsunaga, T., Sato, T. and Nagao, S.
Chemosphere   205 147-155   Apr 2018   [Refereed]
Horiguchi, T., Kodama, K., Aramaki, T., Miyata, Y. and Nagao, S.
Marine Environmental Research   137 206-224   Mar 2018   [Refereed]
Inoue, M., Yoneoka, S., Ochiai, S., Morokado, T., Uemura, H. and Nagao, S.
Journal of Radioanalytical and Nuclear Chemistry   316(3) 1233-1241   Mar 2018   [Refereed]
Inoue, M., Shirotani, Y., Yamashita, S., Takata, H., Kofuji, H., Ambe, D., Honda, N., Yagi, Y. and Nagao, S.
Journal of Environmental Radioactivity   182 142-150   Feb 2018   [Refereed]
Inoue, M., Shirotani, Y., Nagao, S., Aramaki, T., Kim, Y.I. and Hayakawa, K.
Journal of Environmental Radioactivity   182 151-156   Feb 2018   [Refereed]
Kimuro, S., Kirishima, A., Nagao, S., Saito, T., Amano, Y., Miyakawa, K., Akiyama, D. and Nato, N.
Journal of Nuclear Science and Technology   55(5) 503-515   Dec 2017   [Refereed]
Sanial, V., Buesseler, K.O., Charette, M.A. and Nagao, S.
Proceedings of the National Academy of Sciences of the United States of America   114(42) 11092-11096   Oct 2017
Inoue, M., Uemura, H., Kofuji, H., Fujimoto, K., Takata, H., Shirotani, Y., Kudo, N., Nagao, S.
Journal of Oceanography   73 571-584   Sep 2017   [Refereed]
Onodera, M., Kirishima, A., Nagao, S., Takamiya, K., Ohtsuki, T., Akiyama, D., Sato, N.
Chemosphere   185 806-815   Jul 2017   [Refereed]
Inoue, M., Shirotani, Y., Furusawa, Y., Fujimoto, K., Kofuji, H., Yoshida, K., Nagao, S., Yamamoto, M., Hamajima, Y., Honda, N., Morimoto, A., Takikawa, T., Shiomoto, A., Isoda, Y., Minakawa, M.
Continental Shelf Research   143 167-174   Jul 2017   [Refereed]
Bui, H.T., Nagao, S. (corresponding author), Ochiai, S., Fukushi, K., Goto, A., Hasegawa, T.
Journal of Nuclear and Radiochemical Sciences   17 17-22   Mar 2017   [Refereed]
Inoue, M., Yamashita, S., Fujimoto, K., Kofuji, H., Miki, S., Nagao, S.
Applied Radiation and Isotopes   120 17-21   Jan 2017   [Refereed]
Mori, M., Tsunoda, K., Aizawa, S., Saito, Y., Koike, Y., Gonda, T., Abe, S., Suzuki, K., Yuasa, Y., Kuge, T., Tanaka, H., Arai, H., Watanabe, S., Nohara, S., Minai, Y., Okada, Y., Nagao, S.
Science of the Total Environment   575 1247-1254   Jan 2017   [Refereed]
Miyata, Y., Horiuchi, A., Kondo, M., Onbe, S., Yoshida, K., Nagao, S., Paleo Labo AMS Dating Group, Nishimoto, T.
Radiocarbon   58(4) 755-770   Dec 2016   [Refereed]
Matsunaga, T., Nakanishi, T., Atarashi-Andoh, M., Takeuchi, E., Muto, K., Tsuduki, K., Nishimura, S., Koarashi, J., Otosaka, S., Sato, T., Miyata, Y., Nagao, S.
Journal of Radioanalytical and Nuclear Chemistry   310(2) 679-693   Nov 2016   [Refereed]
Inoue, M., Shirotani, Y., Nagao, S., Kofuji, H., Volkov, Y.N., Nishioka, J.
Journal of Environmental Radioactivity   162-163 33-38   Oct 2016   [Refereed]
Shinozuka, K., Chiwa, M., Nakamura, K., Nagao, S., Kume, A.
Water, Air, and Soil Pollution   227(7) 219   Jul 2016   [Refereed]
Ochiai, S., Nagao, S., Yonebayashi, K., Fukuyama, T., Suzuki, T., Yamamoto, M., Kashiwaya, K., Nakamura, K.
Geochemical Journal   49(5) 513-522   Sep 2015   [Refereed]
Saito, T., Terashima, M., Aoyagi, N., Nagao, S., Fujitake, N., Ohnuki, T.
Environmental Science: Processes & Impacts Impact   17(8) 1386-1395   Jul 2015   [Refereed]
Ochiai, S., Miyata, Y., Nagao, S., Yamamoto, M., Murakami, T., Nishimura, S., Itono, T., Suzuki, T., Hamataka, K., Kawano, Y., Hamajima, Y., Kashiwaya, K.
Radiation Protection Dosimetry   167(1-3) 365-369   May 2015   [Refereed]
Matsunaga, T., Nakanishi, T., Atarashi-Andoh, M., Takeuchi, E., Tsuduki, K., Nishimura, S., Koarashi, J., Otosaka, S., Sato, T., Nagao, S.
Journal of Radioanalytical Nuclear Chemistry   303(2) 1291-1295   Feb 2015   [Refereed]
Inoue, M., Minakawa, M., Yoshida, K., Nakano, Y., Kofuji, H., Nagao, S., Hamajima, Y. and Yamamoto, M.
Journal of Radioanalytical Nuclear Chemistry   303(2) 1309-1312   Feb 2015   [Refereed]
Inoue, M., Yoneoka, S., Ochiai, S., Oikawa, S., Fujimoto, K., Yagi, Y., Honda, N., Nagao, S., Yamamoto, M., Hamajima, Y., Murakami, T., Kofuji, H. and Misono, J.
Journal of Radioanalytical Nuclear Chemistry   303(2) 1313-1316   Feb 2015   [Refereed]
Nagao, S., Kanamori, M., Ochiai, S., Inoue, M. and Yamamoto, M.
Journal of Radioanalytical Nuclear Chemistry   303(2) 1617-1621   Feb 2015   [Refereed]
Ochiai, M., Yamamoto, M., Nagao, S., Itono, T. and Kashiwaya, K.
Journal of Radioanalytical Nuclear Chemistry   303(2) 1497-1501   Feb 2015   [Refereed]
Suzuki, T., Nagao, S., Horiuchi, M., Maie, N., Yamamoto, M., Nakamura, K.
Limnology   16(1) 55-68   Jan 2015   [Refereed]
Suzuki, Y., Konno, U., Fukuda, A., Kimatsu, D. D., Hirota, A., Watanabe, K., Togo, Y., Morikawa, N., Hagiwara, H., Aosai, D., Iwatsuki, T., Tsunogai, U., Nagao, S., Ito, K. and Mizuno, T.
PLOS ONE   9(12) e113063   Dec 2014   [Refereed]
Inoue, M., Kofuji, H., Fujimoto, K., Furusawa, Y., Yoshida, K., Nagao, S., Yamamoto, M., Hamajima, Y. and Minakawa, M.
Journal of Environmental Radioactivity   137 113-118   Nov 2014   [Refereed]
Yasuda, T., Asahara, Y., Ichikawa, R., Nakatsuka, T., Minami, H. and Nagao, S.
Progress in Oceanography   126 155-167   Aug 2014   [Refereed]
Seki, O., Bendle, J. A., Harada, N., Kobayashi, M., Sawada, K., Moossen, H., Inglis, G. N., Nagao, S., Sakamoto, T.
Progress in Oceanography   126 254-266   Aug 2014   [Refereed]
Seki, O., Mikami, Y., Nagao, S., Bendle, J. A., Nakatsuka, T., Kim, V.I., Shesterkin, V. P., Makinov, A. N., Fukushima, F., Moossen, H. M., Schouten, S.
Progress in Oceanography   126 146-154   Aug 2014   [Refereed]
Nagao, S., Kanamori, M., Ochiai, S., Suzuki, K., Yamamoto, M.
Progress in Nuclear Science and Technology   4 9-13   Apr 2014   [Refereed]
Tamamura, S., Takada, T., Tomita, J., Nagao, S., Fukushi, K. and Yamamoto, M.
Journal of Radioanalytical Nuclear Chemistry   299(1) 569-575   Jan 2014   [Refereed]
Inoue, M., Furusawa, Y., Fujimoto, K., Minakawa, M., Kofuji, H., Nagao, S., Yamamoto, M., Hamajima, Y., Yoshida, K., Nakano, Y., Hayakawa, K., Oikawa, S., Misono, J. and Isoda, Y.
Journal of Environmental Radioactivity   126 176-187   Dec 2013   [Refereed]
Ochiai, S., Nagao, S., Yamamoto, M., Itono, T., Kashiwaya, K., Fukui, K. and Iida, H.
Applied Radiation Isotopes   81 366-370   Nov 2013   [Refereed]
Inoue, M., Kofuji, H., Murakami, T., Oikawa, S., Yamamoto, M., Nagao, S., Hamajima, Y., Misonoo, J.
Applied Radiation Isotopes   81 340-343   Nov 2013   [Refereed]
Nagao, S., Kanamori, M., Ochiai, S., Tomihara, S., Fukushi, K. and Yamamoto, M.
Biogeosciences   10 6215-6223   Oct 2013   [Refereed]
Matsunaga, T., Koarashi, J., Atarashi-Abdoh, M., Nagao, S., Sato, T., Nagai, H.
Science of the Total Environment   447 301-314   Mar 2013   [Refereed]
Nagao, S., Aramaki, T., Fujitake, N., Kodama, H., Tanaka, T., Ochiai, S., Uchida, M., Shibata, Y., Yamamoto, M.
Radiocarbon   55(2-3) 1007-1016   2013   [Refereed]
Inoue, M., Yoshida, K., Minakawa, M., Kiyomoto, Y., Kofuji, H., Nagao, S., Hamajima, Y., Yamamoto, M.
Geochemical Journal   46 429-441   Oct 2012   [Refereed]
Inoue, M., Kofuji, H., Hamajima, Y., Nagao, S., Yoshida, K. and Yamamoto, M.
Journal of Environmental Radioactivity   111 116-119   Sep 2012   [Refereed]
Koarashi, J., Atarashi-Andoh, M., Matsunaga, T., Sato, T., Nagao, S. and Nagai, H.
Science of the Total Environment   431 392-401   Aug 2012   [Refereed]
Inoue, M., Kofuji, H., Nagao, S., Yamamoto, M., Hamajima, Y., Fujimoto, K., Yoshida, K., Suzuki, A., Takashiro, H., Hayakawa, K., Hamataka, K., Yoshida, S., Kunugi, M. and Minakawa, M.
Geochemical Journal   46(4) 311-320   Aug 2012   [Refereed]
Terashima, M., Nagao, S., Iwatsuki, T., Fujitake, N., Seida, Y., Iijima, K. and Yoshikawa, H.
Jouyrnal of Nuclear Science and Technolology   49(8) 804-815   Jul 2012   [Refereed]
Inoue, M., Kofuji, H., Nagao, S., Yamamoto, M., Hamajima, Y., Yoshida, K., Fujimoto, K., Takada, T. and Isoda, Y.
Journal of Environmental Radioactivity   109 45-51   Jul 2012   [Refereed]

Misc

 
Journal of Radioanalytical and Nuclear Chemistry   255 , 459-464    2003
Sorption behavior of plutonium(Ⅳ)onto soils in the presence of humic acids.
Journal of Nuclear Science and Technology   Supl. 3 , 524-527    2002
Armospheric deposition of Be-7, K-40, Cs-137 and Pb-210 during 1993-2001 at Tokai-mura,Japan.
Journal of Radioanalytical and Nuclear Chemistry   255 , 335-339    2003
Journal of Radioanalytical and Nuclear Chemistry   252,225-232    2002
Correlation between molecular size and functional groups of humica cid on the complexation with 237Np,238Pu and 241Am.
JAERI-Conf 2002-004, JAERI   651-658    2002
Fluorescence quenching stsudies of Eu-humic complexes by three-dimensional wxcitation emission matrix spectroscopy.
Analytical Science   17ul.,i1585-i1588    2001
Attenuated total reflection fourier transform infrared (ATR-FTIR)spectroscopy of functional groups of humic acid dissolving in aqueous solution.
Analytical Science   17Sul.,i1081-i1084    2001
Environmental Science&Technology   35,3683-3690    2001
Assciation of actinides with dissobed organic materials in organic-rich groundwater.
Evaluation of Speciation Technology, OECD-NEA, Vienna   181-188    2001
Speciation of Evaluation radionulcide in the Chernobyl 30-km Sone.
Evaluation of Speciation Technology,OECD-NEA, Vienna   211-218    2001
Characteristics of humic substances in a salineces in a saline groundwater in Boso Peninsula,Japan.
Proceedings of 10th International Meeting of the IHSS, Volume   2,1143-1146    2000
Study on migration of radionuclides released into terrestrial and aquatic environment after Nuclear Accident(Subject-3).
JAERI-Conf 2000-015   87-110    2000
Geochemical association of Cs-137 and Pu-239,240 in the oligotrophic and mesotrophic lake sediments.
Journal of Tadioanalytical Nucear Chemistry   239,555-559    1999
Complexation of Pu and Am with fulvic acid under saline condition
Proceedings of the 2nd NUCEF International Symposium,JAERI-Conf 99-004   674-680    1999
Migration behavior of Eu(Ⅲ) in sandy soil in the presence of dissolved organic materials.
Radiochimica Acta   82,205-211    1998
Cromatographic characteristics of humic substances in natural waters as determined by high-performance gel permeation chromatography with photodiode array UV-VIS detector.
Proceedings of Tnternational Trance Analysis Sympojium   98,71-72    1998
Migration behavior of the released radionuclides in the river system in the exclusion zone of the Chernobyl Nuclear Power Plant
Proceedings of International Conference One Decade After Chernobyl   172-177    1997
Sorption of europium(Ⅲ)-humate complexes onto a sandy soil
Radiochimica Acta   74,245-249    1996
Influence of molecular size of humic aoid on the sorotion of radionuclides onto ando soil
Radioactive Waste Research   2,41-47    1996
Molecular size distribution of Np(V)-humate
JAERI-Research96-055,JAERI      1996
Infloence of humic aoid on sorption of neptunium(V)onto soil
Scientific Basis for Nuclear Waste Management XVⅢ   997-1004    1995
Migration behavior of carbonate-1 4C in tuffaceous soil
Scientific Basis for Nuclear Waste Managament XVIII   1093-1100    1995
Chemical forms of iron in acidotrophic lake sediments from Leke Inawashiro
Proceedings of 6th International Conference on the Conservation and Management of Lakes   1164-1167    1995
The factors controlling vertical color variations of North Atlantic Madeira Abyssal Plain sediments
Marine Geology   109,83-94    1992
An in-situ pore water squeezer for obtaining pore waters at multi-depths in marine sediments
Proceedings of the 3rd International Symposium on Advanced Nuclear Energy Research   258-261    1991
Analysis of dissolved forms and characteristics of humic substances
Journal of Japan Society on Water Environment   
27, 92-95
Radiocarbon of humic substances in river waters from the Chernobyl aera
Nuclear Instruments and Methods in Physics Research B   223-224, 848-853    2004

Books etc

 
Trans-Boundary Pollution in North-East Asia
Honoki, H., Watanabe, K., Matsuki, A., Maki, T., Tang, N., Kameda, T., Kajino, M., Inomata, Y., Kunugi, M., Aramaki, T., Hayakawa, K., Inoue, M. (Part:Editor)
Nova Science Publishers   Aug 2018   
Reclamation and land consolidation effects on organic matter sedimentation in Lake Kiba-gata, Japan. Geomorphology and Society: Advance in Geographical and Environmental Sciences
Nagao, S., Hong Tuoi Bui, Kawano, Y., Suzuki, T., Ochiai, S., Yonebayashi, K., Okazaki, M., Goto, A., Hasegawa, T., Yamamoto, M. (Part:Joint Work)
Springer Japan   2016   ISBN:978-4-431-56000-5
Earth Surface Processes and Environmental Changes in East Asia- Records from Lake Catchment Systems
Ochiai, S., Nagao S., Itono T., Suzuki T., Kashiwaya K., Yonebayashi K., Okazaki M., Kaeriyama M., Qin Y., Hasegawa T., Yamamoto M. (Part:Joint Work, Recent eutrophication and environmental changes in the catchment inferred from geochemical properties of Lake Onuma sediments in Japan)
Springer Japan   2015   ISBN:978-4-431-55540-7
Radionuclides released from nuclear accident: distribution and dynamics in soil. In. Environmental Remediation Technologies for Meta-Contaminated Soils
NAGAO Seiya (Part:Joint Work, Radionuclides Released from Nuclear Accidents: Distribution and Dynamics in Soil)
Springer Japan   2015   ISBN:978-4-431-55759-3
Environmental Change and the social response in the Amur River basin
NAGAO Seiya (Part:Joint Work, Water chemistry of the middle Amur River.)
Springer   2014   
全世界の河川辞典
NAGAO Seiya (Part:Joint Work, アムール川)
丸善   Jul 2013   
Molecular size distribution of Np, Pu and Am in organic-rich, saline groundwater.
Understanding and Managing Organic Matter in Soils, Sediments and Waters (eds. R. S. Swift and K. M. Spark),IHSS, St. Paul   2001   
Chromatographic studies of dissolved organic materials in water by direct measurement of high-performance gel permeation chromatograhy.
Understanding and Managing Organic Matter in Soils, Sediments and Waters(eds. R. S. Swift and K. M. Spark)IHSS, St.Paul   2001   
Dissolved forms of 90Sr,239+240Pu and 241Am in the Sahan River Waters from the Chernobyl area.
Distribution of Speciation of Radionuclides in the Environment (eds. J Inaba,S.Hisamatsu and Y.Otsuka) Institute for Environmental Sciences   2001   
Characterization of fluorescent fractions of soil humic acids.
Humic Substances,Versatile Components of Plants,Soil and Water (eds.E.A.Ghabbour and G.Davies),Royal Society of Chemistry   2000   
Characterization of humic substances in the Kuji River waters by high-performance gel permeation chromatography
The Role of Humic Substances in the Ecosystems and in Environmental Protection, IHSS, Wroclaw   1997   
Fluorescence characteristics of molecular size frantions of humic substances in river waters from Chrnobyl, Ukraine
The Role of humic Substances in the Ecosystems and in Environmental Protection, IHSS, Wroclaw   1997   
Three-dimensinal exoitation emission matrix spectra of humic sobstances in natural waters
The Role of Humic Substances in the Ecosystems and in Environmental Protection, IHSS, Wroclaw   1997   
Application of high-peformance gel permetion chromatograohy to aouatic humic substances in natural waters
Environments:Characterization,Transformations and Interactions,IHSS,St.Paul   1996   

Conference Activities & Talks

 
Study on transport of particulate organic matter in a small river with forest and paddy filed by using carbon isotopes (δ13C and Δ14C)
NAGAO Seiya
29 May 2019   
Erosion and transport processes of earth surface materials in a reservoir-catchment system inferred from atmospheric radionuclides 7Be and 210Pb
29 May 2019   
Transport processes of suspended solids in the Kumaki River inferred from atmospheric radionuclides
NAGAO Seiya
29 May 2019   
Transport processes of earth surface materials in a reservoir-catchment system inferred from the atmospheric radionuclides
Ochiai, S., Tsuruoka, M., Miyata, Y., Nagao, S., Matsuki, A.
International Symposium “Research Frontiers of Transboundary Pollution”   25 Jan 2019   
Environmental behavior of the PAHs along the Tsushima Current during 2014-2017
Matsunaka, T., Nagao, S., Tang, N., Inoue, M., Suzuki, N., Ogiso, S., Hirohashi, N., Nishizaki, M., Ando, H., Shimotani, T., Hayakawa, K.
International Symposium “Research Frontiers of Transboundary Pollution”   24 Jan 2019   
Temporal variations in PAHs at Tsukumo Bay during 2014–2017
Matsunaka, T., Nagao, S., Tang, N., Inoue, M., Suzuki, N., Ogiso, S. and Hayakawa, K.
The 3rd Regional IWA Diffuse Pollution Conference - 2018,   21 Nov 2018   
Effects of Radiocesium Released from the Fukushima Dai-Ichi Nuclear Power Plant Accident on Aquatic Environment Around Onahama, Japan
NAGAO Seiya
10th International Aquarium Congress 2018 Fukushima   7 Nov 2018   
Effects of radiocesium released from Fukushima Dai-ichi Nuclear Power Plant accident on aquatic environment around Onahama, Japan
Nagao, S., Tomihara, S., Morokado, T., Yamagishi, E., Shimamura, A., Tadou, S., Kanamori, M., Yoshida, K., Ochiai, S.
IAP   7 Oct 2018   
Sedimentation processes inferred from radionuclides and physical properties of coastal sediments in Nanao Bay, Japan
Ochiai, S., Nagao, S., Kawamura, K., Fujita, A., Suzuki, T.
Oct 2018   
Study on organic matter dynamics in an organic pollution lake, Lake Kiba using carbon isotope composition
Sakaguchi, K., Nagao, S., Fukushi, K., Matsunaka, T., Katsumi, N., Sugimoto, R.
15th International Workshop Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   Oct 2018   
Study of Sedimentary Environment of Lake Akkeshi and Akkeshi Bay by Using 210Pb
Sasaki, K., Nagao, S., Kamauchi, H., Seki, O., Ochiai, S., Goto, A., Hasegawa, T., Katsumi, N., Isada, T.
15th International Workshop Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   Oct 2018   
Transport processes of earth surface materials in a reservoir-catchment system based on the atmospheric radionuclides
Ochiai, S., Nagao, S., Miyata, Y., Matsuki, A.
Global Land Programme 2018 Asia Conference   3 Sep 2018   
Transport behavior of particulate Organic matter in river-coastal linkage system: wetlandriver to brackish system in northern Japan
NAGAO Seiya
2018 Asia Global Land Programme Conference   3 Sep 2018   
Signs of global warming on coastal marine environment around Hokuriku region, Japan
NAGAO Seiya
II International Conference on Climate change in Asia - 2018, Far Eastern Federal University   22 Aug 2018   
Anthropogenic iodine-129 in the Japan Sea Bottom Water and Dense Shelf Water of Okhotsk Sea.
NAGAO Seiya
24 May 2018   
Research of submarine groundwater discharge using 222Rn in Nanao West Bay
24 May 2018   
Dynamics of particulate organic matter in a small lagoon, Lake Kiba, in Japan
NAGAO Seiya
24 May 2018   
Transport processes of earth surface materials and atmospheric radionuclides in reservoir-catchment system
NAGAO Seiya
24 May 2018   
Study on dynamics of organic matter in river systems using Δ14C
Nagao, S.
日本質量分析学会・日本プロテオーム学会 2018年合同大会   17 May 2018   
Anthropogenic iodine-129 and PAHs in seawater from the Japan Sea and the southern Okhotsk Sea
Matsunaka, T., Nagao, S., Inoue, M., Ochiai, S., Hayakawa, K., Tang, N., Suzuki, N., Ogiso, S., Ando, H., Shimotani, T., Hirohashi, N., Nishizaki, M., Morita, T., Miki, S., Aramaki, T., Kudo, I., Honda, N., Takikawa, T., Sasa, K., Honda, M. and Sueki, K.
International Symposium “Environmental researches in northern Japan Sea and related regions: Renewed horizon of Japan-Russia scientific partnership”   Mar 2018   
Variations in 134Cs and 137Cs radioactivity of coastal marine sediment off the Abukuma River in Japan during 2013-2015
NAGAO Seiya
Division of Science Presenta. Yale-NUS College   14 Nov 2017   
Existence forms and distribution of radiocesium in marine sediments in the coastal area off Fukushima and Miyagi Prefecture
Terasaki, S., Nagao, S., Odano, N. and Asami, M.,
Japan-Russia workshop on state of radionuclides in marine environment   3 Nov 2017   
Fate of particulate radiocesium (134Cs, 137Cs) in coastal marine environment off Fukushima Prefecture, Japan
Nagao, S., Terasaki, S., Odano, N. and Asami, M.
Japan-Russia workshop on state of radionuclides in marine environment   3 Nov 2017   
Tentative results of Ra isotopes in sea waters collected from the 2016 research expedition
Nagao, S., Inoue, M., Morokado, T., Shirotani, Y., Chizova, T. and Lobanov, V. B.
Japan-Russia Workshop “Study on dynamics of radioactive compounds and polycyclic aromatic hydrocarbons in the Japan Sea area”   29 Sep 2017   
Radioactivity Variation and Transport Behavior of Radiocesium in the Natsui River after the Fukushima Dai-Ichi Nuclear Power Plant Accident
Morikado, T., Nagao, S., Tomihara, S., Ochiai, S.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Existence Forms and Distribution Characteristics of Radiocesium in Marine Sediments in the Coastal Area off Fukushima Prefecture
Terasaki, S., Nagao, S., Odano, N.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Low-level of the FDNPP-derived Radiocesium in Marine Products around the Western Japanese Archipelago
Yamashita, S., Inoue, M., Fujimoto, K., Miki, S., Nagao, S.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Vertical Profiles of FDNPP-derived Radiocesium Concentrations in Southwestern Okhotsk Sea Waters
Inoue, M., Morikado, T., Fujimoto, K., Miki, S., Kofuji, H., Isoda, Y., Nagao, S.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Sedimentation Environmental Changes Inferred from Fallout Radionuclides and Physical Properties of Sun Moon Lake Sediment in Taiwan
Ochiai, S., Lin, J-C., Jen, C-H., Nagao, S., Kashiwaya, K.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Effects of Snow Melt and Rain Event on Transport of Radiocesium in the Tone River after the Fukushima Dai-Ichi Nuclear Power Plant
Nagao, S., Morokado, T., Tadou, S., Suzuki, K., Ochiai, S.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Low-levels of 134Cs in riverine suspended solids discharged to coastal areas off central Honshu in the Sea of Japan
Inoue, M., Yoneoka, S. Ochiai, S., Morokado, T., Uemura, H., Nagao, S.
The 6th Asia-Pacific Symposium on Radiochemistry (APSORC17)   Sep 2017   
Water mass movement and dynamics of trace elements in the Japan Sea
Nagao, S., Inoue, M., Ochiai, S., Matsunaka, T. and Hayakawa, K.
Symposium on collaboration research between POI of FEBRUS and INET of Kanazawa University: Behavior of organic pollutants and radionuclides in the Japan Sea   15 May 2017   
Relationship between caron isotope composition and land-use of watershed in a small river system, Kumaki River in Japan
Nagao, S., Suzuki, T., Ochiai, S., Goto, A. and Hasegawa, T.
11th International Conference on Humic Substances in Ecosystems (HSE11)   May 2017   
Transport processes of earth surface materials based on stable and radioactive isotopes of reservoir sediments in Noto Peninsula [Invited]
Ochiai, S., Nagao, S., Suzuki, T., Miyata, Y., Yonebayashi, K., Fukuyama, T., Yamamoto, M. and Nakamura, K.
Symposium to Promote Joint Usage / Research Center, Institute of Nature and Environmental Technology   28 Feb 2017   
Relationship between COD and organic matter in surface water from Lake Kiba-gata, Japan
Nagao, S., Bui, H. T., Fukushi, K., Hashi, K.
13th East Eurasia International Workshop on Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   15 Oct 2016   
Transport processes of particulate organic matter in reservoir-catchment systems in Noto Peninsula, Japan
Ochiai, S., Nagao, S., Suzuki, T., Miyata, Y., Yonebayashi, K., Fukuyama, T., Yamamoto, M., Kashiwaya, K. and Nakamura, K.
The 13th East Eurasia International Workshop on Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   15 Oct 2016   
Temporal variations of particulate organic matter in Lake Kiba, Japan during 2015-2016
Bui, H.T., Nagao, S., Suzuki, T., Kawano, Y., Fukushi, K., Hashi, K., Ochiai, S., Yamamoto, M.
18th International Conference of International Humic Substances Society   15 Sep 2016   
Transport of POM in Fukushima River systems after heavy rain events in 2011-2015
Nagao, S., Kanamori, M., Uemura, T., Tado, S., Ochiai, S., Kirishima, A., Tomihara, S., Miyata, Y., Goto, A., Hasegawa, T.
18th International Conference of International Humic Substances Society   15 Sep 2016   
Plantation impacts on the transport of particulate organic matter printed in the reservoir sediments in the Noto Peninsula, Japan
Ochiai, S., Nagao, S., Suzuki, T., Fukushima, M., Yonebayashi, K., Fukuyama, T., Yamamoto, M. and Nakamura, K.
18th International Conference of International Humic Substances Society   12 Sep 2016   
Variations in 134Cs and 137Cs radioactivity of coastal marine sediments off the Abukuma River in Japan during 2013-2015
Nagao, S., Terasaki, S., Miyata, Y., Odano, N.
Goldshcmidt2016   1 Jul 2016   
Seasonal variations of organic matter in Lake Kiba, Japan during 2014-2015
Bui, H. T., Nagao, S., Suzuki, T., Kawano, Y., Fukushi, K., Hashi, K., Ochiai, S., Yamamoto, M.
Goldshcmidt 2016   30 Jun 2016   
Study on transport of particulate organic matter from river to ocean using radiocarbon
NAGAO Seiya
26 May 2016   
Sedimentation processes of radioactive Cs contaminated soil in storage reservoirs in Iwaki, Fukushima prefecture
Aoi, Y., Fukushi, K., Tomihara, S., Yoshida, K., Itono, T., Asahi, K., Kashiwaya, K., and Nagao, S.
12th East East EurasiaInternational Workshop: Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   5 Sep 2015   
Temporal variations of COD concentration in Lake Kiba, Japan during 2013-2014
Bui, H. T., Nagao, S., Suzuki, T., Kawano, Y., Fukushi, K., Hashi, K., Ochiai, S., Yamamoto, M.
12th East Eurasia International Workshop: Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia   Sep 2015   
Transport of 134Cs and 137Cs in the lower Niida River in Fukushima Prefecture, Japan after the Fukushima Dai-ichi Nuclear Power Plant accident
Nagao, S., Tado, O., Uemura, T., Kanemori, M., Kirishima, A., Miyata, Y., Ochiai, S., Yamamoto, M.
INQUA2015   28 Jul 2015   
Transport of 134Cs and 137Cs in the lower Abukuma River after the Fukushima Dai-ichi Nuclear Power Plant accident
Nagao, S., Tado, O., Uemura, T., Kanemori, M., Miyata, Y., Ochiai, S., Yamamoto, M.
ICOBTE 2015   15 Jul 2015   
Transport of particulate organic radiocarbon in the northwest Pacific region
NAGAO Seiya
18th Pacific-Asian Marginal Seas Meeting   21 Apr 2015   
Migration pattern of the Tsushima Warm Current within/around the Sea of Japan: Implications from transport of 228Ra
Inoue, M., Shirotani, Y. Furusawa, Y., Fujimoto, K., Kofuji, H., Yoshida, K., Nagao, S., Yamamoto, M., Hamajima, Y., Honda, N., Minakawa, M., Shiomoto, A., Isoda, Y., Hayakawa, K.
18th Pacific-Asian Marginal Seas Meeting   21 Apr 2015   
Impact of reclamation and land consolidation on COD in Lake Kiba, Japan
Nagao, S., Tuoi, B. H., Kawano, Y., Suzuki, T., Ochiai, S., Goto, A., Hasegawa, T. and Yamamoto, M.
The Inaugural Conference of OGU commission on Geomorpholgy and Society “Earth Surface Processes and Impact to the Changing Environment”   Sep 2014   
Cs-134 and Cs-137 radioactivity in river waters in Fukuhsima, Miyagi, Ibaraki and Gunma Prefectures in August 2012 after the Fukushima Dai-ichi Nuclear Power Plant accident
Nagao, S., Kanamori, M., Ochiai, S., Tomihara, S., Suzuki, K. and Yamamoto, M.
3rd International Conference on Radioecology and Environmental Radioactivity (ICRER 2014)   Sep 2014   

Works

 
Studies on groundwater flow and radionuclide migration at underground Environments
1994 - 1998
Study on assessment and analysis of enviromental radiological consequences and verification of on assessment system
1995 - 1999
Joint Research Project between JAERI and Universities
1994 - 2001
Study on atmospheric deposition flux of trace contaminant materials and their historic variation into japanese island by using lake sediments
2000 - 2001
Preparation and characterization of standard materials for aquatic fulvic acid
2001 - 2003

Research Grants & Projects

 
Dynamics of dissolved organic matter in marine envivonment
The Global Environment Research Fund
Project Year: 2001   
Study on Reconstruction s of paleoceanographic envivorments
The Global Environment Research Fund
Project Year: 2001   
Migration behavior of refractory organic matter in terrestrial environment
The Global Environment Research Fund
Project Year: 2001   
Study on Geochemical Behavior of radionuclides in aquatic environment
The Global Environment Research Fund
Project Year: 2001