Development of hydrothermal-derived trace metals monitoring method in the ocean by using the in-situ auto analyzer
| Project/Area Number |
24310006
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Hajime Obata 東京大学, 大気海洋研究所, 准教授 (90334309)
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| Co-Investigator(Kenkyū-buntansha) |
OKAMURA Kei 高知大学, 教育研究部総合科学系複合領域科学部門, 准教授 (70324697)
MARUO Masahiro 滋賀県立大学, 環境科学部, 准教授 (80275156)
GAMOS Toshitaka 東京大学, 大気海洋研究所, 教授 (70143550)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Keywords | 熱水プルーム / 鉄 / 亜鉛 / 硫化物 / 有機配位子 / 現場型自動分析計 / 自動分析装置 / 海底熱水活動 / 微量金属元素 / 有機錯体 / 鉄(II) / 錯生成 |
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| Outline of Final Research Achievements |
We investigated distributions and biogeochemical cycles of trace metals in hydrothermal plumes that have strong influences on dissolved iron budget in the ocean. We first developed a correction method of Fe(II) measurements in hydrothermal plumes by using dissolved oxygen and sulfide concentrations in water samples. Using this correction method, we revealed the vertical Fe(II) distribution at the Juan de Fuca Ridge more accurately. On the other hand, zinc speciation in seawater was examined in the coastal hydrothermal area in Tachibana Bay in Nagasaki, Japan. The Zn distribution was seemingly regulated by existing sulfides and organic ligands in seawater. Moreover, we obtained a vertical Fe(II) distribution to a depth of 1500m in the South Pacific Ocean continuously with an in-situ auto analyzer.
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Report
(5 results)
Research Products
(40 results)
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[Journal Article] Impact of anthropogenic Pb and ocean circulation on the recent distribution of Pb isotopes in the Indian Ocean.2015
Author(s)
Lee, J-M., Boyle, E. A., Gamo T., Obata, H., Norisuye, K., and Echegoyen, Y.
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Journal Title
Geochimica et Cosmochimica Acta
Volume: 170
Pages: 126-144
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Shallow submarine hydrothermal activity with significant contribution of magmatic water producing talc chimneys in the Wakamiko Crater of Kagoshima Bay, southern Kyushu, Japan.2013
Author(s)
Yamanaka, T., Maeto, K., Akashi, H., Ishibashi, J., Miyoshi, Y., Okamura, K., Noguchi, T., Kuwahara, Y., Toki, T., Tsunogai, U., Ura, T., Nakatani, T., Maki, T., Kubokawa, K., and Chiba, H.
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Journal Title
J. Volcan. Geotherm. Res.
Volume: (in press)
Pages: 74-84
DOI
Related Report
Peer Reviewed
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[Journal Article] Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance with the geographical distribution of whole hydrothermal circulation2012
Author(s)
Kawagucci, S., Ueno, Y., Takai, K., Toki, T., Ito, M., Inoue, K., Makabe, A., Yoshida, N., Muramatsu, Y., Takahata, N., Sano, Y., Narita, T., Teranishi, G., Obata, H., Nakagawa, S., Nunoura, T., and Gamo, T
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Journal Title
Chem. Geol
Volume: 339
Pages: 213-225
DOI
Related Report
Peer Reviewed
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[Presentation] Characterization of highly strong metal binding ligands in waters of natural lakes in Japan and Korea by electroanalysis2014
Author(s)
Maruo, M., H. Obata, O. Mitamura, T. Akatsuka, N. Amahashi, H. Azumi, H.-S. Shin, Y. Seike, S. Sugahara, A. Yagi, M. Oyagi, N. Ishida, R. Somiya, J. K. Choi
Organizer
The 16th International Symposium on River and Lake Environments
Place of Presentation
LADENA Resort, Chuncheon (Korea)
Year and Date
2014-08-24 – 2014-08-27
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