| Project/Area Number |
23540525
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Kochi University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2012: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2011: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Keywords | リチウム放出 / 三次元計測 / 三角測量 / 中性大気風 / 日米共同ロケット実験 / 昼間 / 熱圏大気 / 観測ロケット / 熱圏風速測定 / 共鳴散乱光 / 航空機観測 / 月明 / 熱圏 / 中性大気 / 風速 |
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| Research Abstract |
To study the thermosphere is important for understanding global atmosphere (e.g. global warming), however, observation of thermosphere is difficult. Less than 1% of the rarefied atmosphere is ionized by solar ultra-violet, thus it can be observed by radars, whereas, more than 99% of the neutral atmosphere is too difficult to observe, preventing from our understanding. Due to optical tracking of artificially illuminating clouds by rocket-released TMA (Try-Methyl-Aluminum), it has been established neutral wind measurement in nighttime thermosphere below about 160 km, however, the measurement in daytime has never been established before. We use rocket-released Lithium and its resonance-scattering by sunlight in order to establish the neutral wind measurement in daytime. In July 2013, Japan-U.S. collaborating rocket experiment was carried out and the rocket-released Lithium was successfully observed for 20 minutes, resulting on establishment of the difficult measurement.
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