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last modified：2025/03/18
Assistant Professor OCHIAI, Shinya
Faculty, Affiliation
Institute of Nature and Environmental Technology
College and School Educational Field
Division of Material Chemistry, Graduate School of Natural Science and Technology
Laboratory
TEL:0761-51-4440 FAX:0761-51-5528
Academic Background
Career
Kanazawa University(2005/04/01-2007/03/31)
Kanazawa University(2007/04/01-2007/09/30)
National Taiwan University(2007/10/01-2010/05/31)
Kanazawa University(2010/06/01-2013/12/31)
Institute for Environmental Sciences(2014/01/01-2016/03/31)
Kanazawa University(2016/04/01-)
Year & Month of Birth
Academic Society
Award
Specialities
Speciality Keywords
Hydrogeomorphology, Environmental dynamic analysis, radionuclides
Research Themes
Studies on catchment environmental changes and material transport processes based on lake and reservoir sediments
Books
- Ochiai, S., Hasebe, N., Tsukawaki, S. Field Work and Laboratory Experiments in Integrated Environmental Sciences Springer 2024/01/29
- Nagao, S., Ochiai, S. Field Work and Laboratory Experiments in Integrated Environmental Sciences Springer 2024/01/29
- Inoue, M., Ochiai, S. Field Work and Laboratory Experiments in Integrated Environmental Sciences Springer 2024/01/29
Papers
- Response of Diatom and Cladoceran Assemblages to Artificial Modifications on Sun-Moon Lake over the Past Century Fukumoto, Yu, Ochiai, S., Kashiwaya K. Journal of the National Taiwan Museum 77 19-36 2024/09/01
- Nuclear accident-derived 129I in several river water, eastern Fukushima, Japan, 2016-2020 Ueda, S., Hasegawa, H., Ohtsuka, Y., Ochiai, S. Journal of Environmental Radioactivity 282 107617 2025/02/01
- Hydro‑geomorphological changes in an artificial modified lake‑catchment system inferred from lacustrine sediments of Ri‑Yue Tan (Sun Moon Lake), central Taiwan Kashiwaya, K., Liu, S. H., Ochiai, S., Lin, J. C., Fukushi, K. Environmental Earth Sciences 83 405 2024/06/01
- Temporal variation of tritium concentration in monthly precipitation collected at a Difficult-to-Return Zone in Namie Town, Fukushima Prefecture, Japan Yamada, R., Hasegawa, H., Ochiai, S., Kakiuchi, H., Kuwata, H., Kheamsiri, K., Akata1, N., Tokonami, S., Ueda, S. Environmental Science and Pollution Research 31 7818-7827 2024/01/01
- Sediment discharge fluctuation in the Selenga inferred from Lake Baikal sediments Kashiwaya, K., Machida, N., Ochiai, S., Shichi, K. Transactions, Japanese Geomorphological Union 44 43-59 2023/07/01
- 140 years-long sedimentary records of PAHs and CN stable isotopes from Ninomiya River, Japan Mundo, R., Iwai, H., Ochiai, S., Matsunaka, T., Hasebe, N., Nagao, S. Marine Pollution Bulletin 192 114943 2023/05/01
- Temporal variation of post-accident 129I in atmospheric particulate matter collected from an evacuated area of Fukushima prefecture, Japan Hasegawa, H., Kakiuchi, H., Ochiai, S., Akata, N., Ueda, S., Tokonami, S. Radiation Protection Dosimetry 198 1143-1149 2022/09/09
- Temporal variation in radiocesium concentrations in waters of the Natsui and Same rivers, south Fukushima prefecture, Japan from 2011 to 2020 Nagao, S., Kanamori, M., Shimamura, A., Morokado, T., Putra, D. I. P., Fujita, T., Tomihara, S., Ochiai, S. Radiation Protection Dosimetry 198 947-956 2022/09/09
- Distributions of 210Pb, 137Cs, and physical properties in bottom sediments of West Nanao Bay, Japan Ochiai, S., Fujita, A., Tokunari, T., Sakai, H., Nagao, S. Radiation Protection Dosimetry 198 1058-1065 2022/09/09
- Characteristics of lake sediment from the southwestern Mongolia and comparison with meteorological data Udaanjargal, U., Hasebe, N., Davaasuren, D., Fukushi, K., Tanaka, Y., Gankhurel, B., Katsuta, N., Ochiai, S., Miyata, Y., Gerelmaa, T. Geosciences 12 1 7 2021/12/24
- Quantitative and semi-quantitative analyses using a portable energy dispersive X-ray fluorescence spectrometer: Geochemical applications in fault rocks, lake sediments, and event deposits Watanabe, T., Ishii, C., Ishizaka, C., Niwa, M.， Shimada, K., Sawai, Y., Tsuchiya, N., Matsunaka, T., Ochiai, S., Nara, F. W. Journal of Mineralogical and Petrological Sciences 116 3 140-158 2021/07/17
- Geochemical Control of PAHs by Inflowing River Water to West Nanao Bay, Japan, and Its Influences on Ecological Risk: Small-Scale Changes Observed under Near-Background Conditions at an Enclosed Bay Mundo, R., Matsunaka, T., Iwai, H., Ochiai, S., Nagao, S. Int. J. Environ. Res. Public Health 18 19 10310 2021/09/30
- Dynamics of Radioactive Cesium in Coastal Area Linked with River Discharge Misonou, T., Tsuruta T., Shiribiki, T., Nakanishi, T., Nagao, S., Ochiai, S., Sanada, Y. Journal of Coastal Research 114 315-319 2021/10/06
- Ten-year radiocesium fluvial discharge patterns from watersheds contaminated by the Fukushima nuclear power plant accident Ueda, S., Hasegawa, H., Ohtsuka, Y., Ochiai, S., Tani, T. Journal of Environmental Radioactivity 240 106759 2021/10/23
- Spatial and temporal fluctuations of nuclear accident-derived tritium concentration in river waters in eastern Fukushima, Japan Ueda, S., Hasegawa, H., Kakiuchi, H., Ochiai, S. Impacts of Fukushima Nuclear Accident on Freshwater Environments 2021/11/17
- Differences in radiocesium export in river systems one and five years after the Fukushima Daiichi Nuclear Power Plant accident Nagao, S., Kanamori, M., Uemura, H., Tado, S., Shimamura, A., Morokado, T., Tomihara, S., Watanabe, S., Suzuki, K., Ochiai, S. Impacts of Fukushima Nuclear Accident on Freshwater Environments 2021/11/17
- Spatial and temporal changes of 137Cs concentrations in river waters and correlation with the radiocesium inventory in Fukushima and adjacent areas Ochiai, S., Ueda, S., Nagao, S., Tsuji, H., Tomihara, S., Watanabe, S., Suzuki, K. Impacts of Fukushima Nuclear Accident on Freshwater Environments 2021/11/17
- Sedimentary rhythm of Mn-carbonate laminae induced by East Asian summer monsoon variability and human activity in Lake Ohnuma, southwest Hokkaido, northern Japan Katsuta, N., Naito, S., Ikeda, H., Tanaka, K., Murakami, T., Ochiai, S., Miyata, Y., Shimizu, M., Hayano, A., Fukui, K., Hasegawa, H., Nagao, S., Nakagawa, M., Nagashima, K., Niwa, M., Murayamai, M., Kagawa, M., Kawakami, S. Quaternary Science Reviews 248 106576 2020/10/02
- A Study of Sedimentary Environments Based on Long-term Observation in a Small Lake-catchment System in Central Japan Itono, T., Kashiwaya, K., Ochiai, S. Environmental Processes 7 615-630 2020/07/01
- Organic carbon accumulation and productivity over the past 130 years in Lake Kawaguchi (central Japan) reconstructed using organic geochemical proxies Yamamoto, S., Hubert-Ferrari, A., Lamair, L., Miyata, Y., Ochiai, S., Nagao, S., Miyauchi, N., Yoshida, K., Fujiwara, O., Yokoyama, Y., Heyvaert, V.M.A, De Batist, M., the QuakeRecNankai Team Journal of Paleolimnology 64 365-377 2020/07/21
- Transport processes of suspended and riverbed sediments inferred from atmospheric radionuclides in the Kumaki River Ochiai, S., Tokunari, T., Suzuki, T., Nagao, S. Transactions, Japanese Geomorphological Union 41 3 313-326 2020/08/31
- Relationship between carbon isotope composition of river bottom sediments and land use effects on a watershed in a small river system: Kumaki River, Japan Nagao S., Suzuki T., Ochiai S., Goto A. S. , Aramaki T., Hasegawa T. Transaction, Japanese Geomorphological Union 41 3 295-311 2020/08/31
- Desorption behavior of Fukushima-derived radiocesium from sand at Yotsukura Beach in Fukushima Prefecture Nagao, S., Terasaki, S., Ochiai, S., Fukushi, K., Tomihara, S., Charette, M. A., Busseler, K. O. Analytical Sciences 2020/03/11
- Quantitative μ-XRF scanning spectroscopy of wet sediment based on the X-ray absorption and emission theories: its application to freshwater lake sedimentary sequences Katsuta, N., Takano, M., Sano, N., Tani, Y., Ochiai, S., Naito, S., Murakami, T., Niwa, M., Kawakami, S. Sedimentology 66 2490-2510 2019/10/01
- Spatial-Temporal variation and its controlling factors of radiocesium concentration in coastal sediment off Abukuma River 18 2 35-47 2019/01/28
- Interannual changes in radiocesium concentrations in annually laminated tufa following the Fukushima Daiichi Nuclear Power Plant accident Katsuta, N., Miyata, Y., Murakami, T., Mino, Y., Naito, S., Yasuda, K., Ochiai, S., Abe, O., Yasuda, A., Morimoto, M., Kawakami, S., Nagao, S. Applied Geochemistry 102 34-43 2019/03
- Chemical speciation and environmental behavior of arsenic in lacustrine sediment on Lake Onuma, Hokkaido Fukushi, K., Yabe, T., Itono, T., Ochiai, S., Murakami, T., Hasebe, N., Kashiwaya, K. Transactions, Japanese Geomorphological Union 40 1 57-75 2019/01
- Recent environmental changes in the catchment of Lake Onuma, Japan, inferred from lacustrine sediments Ochiai, S., Itono, T. Transactions, Japanese Geomorphological Union 40 1 45-56 2019/01
- Environmental changes in the earth surface inferred from lake-catchment systems Kashiwaya, K., Itono, T., Ochiai, S., Ishikawa, K., Hasebe, N. Transactions, Japanese Geomorphological Union 40 1 5-25 2019/01
- Changes of sedimentation environment inferred from fallout radionuclides and physical properties of sediment in Sun Moon Lake, Taiwan Ochiai, S., Lin, J. C., Jen, C. H., Nagao, S., Kashiwaya, K. Journal of Radioanalytical and Nuclear Chemistry 316 1181-1187 2018/06
- Low levels of 134Cs in suspended solids in rivers discharging into the Sea of Japan Inoue, M., Yoneoka, S., Ochiai, S., Morokado, T., Uemura, H., Nagao, S. Journal of Radioanalytical and Nuclear Chemistry 316 1233-1241 2018/06
- Hydrological and climate changes in southeast Siberia over the last 33 kyr Katsuta N., Ikeda H., Shibata K., Saito-Kokubu Y., Murakami T., Tani Y., Takano M., Nakamura T., Tanaka A., Naito S., Ochiai S., Shichi K., Kawakami S., Kawai T. Global and Planetary Change 164 11-26 2018/03/12
- Characterization ascertained from δ13C and Δ14C of particulate organic matter in surface water from a shallow and semi-closed Lake Kiba Hong Tuoi Bui, Seiya Nagao, Shinya Ochiai, Keisuke Fukushi, Akiko Goto, Takashi Hasegawa Journal of Nuclear and Radiochemical Sciences 17 17-22 2017/03/22
- Temporal variation of post-accident atmospheric 137Cs in an evacuated area of Fukushima Prefecture: size-dependent behaviors of 137Cs-bearing particles Shinya Ochiai, Hidenao Hasegawa, Hideki Kakiuchi, Naofumi Akata, Shinji Ueda, Shinji Tokonami, Shun'ichi Hisamatsu Journal of Environmental Radioactivity 165 131-139 2016/09/19
Conference Presentations
- Past flood events inferred from atmospheric radionuclides and physical properties of West Nanao Bay sediments(conference：The 19th East Eurasia International Workshop -Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia)(2024/10/07)
- Reconstruction of historical record of heavy rainfall events based on atmospheric radionuclides and magnetic properties of lacustrine sediments in Tateyama Caldera, Toyama, Japan(conference：2023 International conservation conference)(2023/10/03)
- Transport processes of atmospheric radionuclides in the Kumaki River, Japan(conference：KU-PKU Joint Workshop on Environmental Issues)(2022/03/16)
- Reconstruction of past flood events based on atmospheric radionuclides and magnetic properties of coastal sediments in Nanao Bay, Japan(conference：Understanding Present Environmental Situation of Marginal Sea (III))(2021/03/10)
- Discharge behavior of suspended solids in the kumaki river based on atmospheric radionuclides(conference：The 16th East Eurasia International Workshop Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia)(2019/09/17)
- Typhoon-induced Soil Erosion Inferred From Reservoir Sediment Observation In A Mud Rock Area In Southern Taiwan(conference：Asia Oceania Geosciences Society 16th Annual Meeting)(2019/07/29)
- Transport processes of suspended solids in the Kumaki River inferred from atmospheric radionuclides(conference：Japan Geoscience Union Meeting 2019)(2019/05/29)
- Natural and anthropogenic impacts on the transport of particulate organic matter inferred from reservoir sediments in the Noto Peninsula, Japan(conference：2019 Taiwan Geosciences Assembly)(2019/05/16)
- Erosion and transport processes of earth surface materials in river catchment systems inferred from atmospheric radionuclides(conference：Workshop for source identification and transport processes in river systems)(2019/05/13)
- Transport processes of earth surface materials in a reservoir-catchment system inferred from the atmospheric radionuclides(conference：International Symposium “Research Frontiers of Transboundary Pollution”)(2019/01/25)
- Sedimentation processes inferred from radionuclides and physical properties of coastal sediments in Nanao Bay, Japan(conference：The 15th East Eurasia International Workshop on Present Earth Surface Processes and Long-term Environmental Changes in East Eurasia)(2018/10/09)
- Transport processes of earth surface materials in a reservoir-catchment system based on the atmospheric radionuclides(conference：Global Land Programme 2018 Asia Conference)(2018/09/03)
- Transport processes of earth surface materials and atmospheric radionuclides in reservoir-catchment system(conference：Japan Geoscience Union Meeting 2018)(2018/05/24)
- Sedimentation environmental changes inferred from fallout radionuclides and physical properties of Sun Moon Lake sediment in Taiwan(conference：6th Asia-Pacific Symposium on Radiochemistry)(2017/09/18)
Others
Arts and Fieldwork
Patent
Theme to the desired joint research
Grant-in-Aid for Scientific Research
○「ハロゲン元素を指標とした潟湖の塩分変動に基づく後期完新世の海水準低下期の特定」(2022-2024)
○「堆積物の放射能・磁性・物性による豪雨・地震・火山活動に伴う土砂災害史復元法の開発」(2022-2024)
○「湖沼地域から砂漠への変遷過程の解明と乾燥化対策へのシーズ探索」(2021-2024)
○「南北両半球の堆積物を用いた年レベルの偏西風経路復元と地球温暖化影響の検出」(2018-2020)
○「堆積物の放射性核種・磁化特性による河川流域の土砂流出イベント履歴復元手法の開発」(2019-2021)
○「気候システム移行期における突発的環境変動」(2014-2016)
Competitive research funding,Contribution
Collaborative research,Consignment study
Classes (Bachelors)
○Experiments in Basic Chemistry B(2017)
Classes (Graduate Schools)
○Seminar in Material Analysis(2017)
○Seminar in Material Analysis(2017)
○Seminar in Material Analysis(2016)