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Researcher Information

last modified：2024/04/04

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

  • 　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

show all

  • 　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

  • 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)

show all

  • 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)

International Project

International Students

Lecture themes

Others (Social Activities)

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