| Project/Area Number |
15K12187
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 三酸素同位体組成 / 水素同位体組成 / 水 / 水蒸気 / 火山ガス / 温泉水 / 降水 / 陸水 / 酸素同位体組成 |
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| Outline of Final Research Achievements |
In this study, stable hydrogen and triple oxygen isotopic compositions of water (H2O) in rainwater, lake water, glacier stream water, and water vapor samples were measured to gain more insight into water cycle on, above and below the surface of the Earth. We also collected the water vapor samples above the ocean waters in North Pacific Ocean and measure their stable isotopic compositions. The 17O-excess values of water vapor over the oceans were roughly correlated with temperature and humidity. Variations in the 17O-excess values were also found in the water samples collected from the fumaroles and hot springs. This result is giving new insights into water source and cycle of hydrothermal systems.
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