- 2021 - 2024 Verification of the indeces of high CO2 concentration detection in a natural CO2 leakage sea and its implementation in ecosystem model
- 2019 - 2023 季節海氷域における海洋酸性化と石灰質生物の応答メカニズムの解明
- 2018 - 2021 Innovation on in situ biogeochemical measurement with advanced flow-analysis and optical sensing technology
- 2014 - 2017 Field observation of CO2 seeping into the ocean in UK for environmental impact assessment
- 2012 - 2015 Development of supersensitive ISFET-pH electrode for oceanographic long-term observation
- 2010 - 2012 Iron sedimentation: Reconstruction of Archean ocean environment from modern Kikai Caldera hydrothermal system
- 2007 - 2010 Geochemical ocean sections study focusing on trace elements and isotopes in the Indian Ocean and the Japan Sea (GEOTRACES Program)
- 1989 - 1989 伊豆・小笠原海域の海底熱水系における重金属元素の挙動
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