2017 Fiscal Year Final Research Report
Coupling between neutral atmosphere and plasma
| Project/Area Number |
15K05303
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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 | Hokkaido Information University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 地球惑星大気プラズマ / 電離圏 / 熱圏 / プラズマ圏 / 大気プラズマモデリング / 大気プラズマ結合 |
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| Outline of Final Research Achievements |
A new discovery of atmospheric plasma coupling process obtained by sounding rocket experiments is a high speed wind flow of neutral atmosphere of ~ 100 m/s around 100 km altitude. The high-speed wind occurs in the dynamo region from 90 km to 130 km. The winds include small scale wind fluctuations. We believe that we directly observed atmospheric gravity waves existing around 100 km altitude.
Based on the findings and knowledge, we have developed the Earth and planetary atmosphere-plasma models. The atmospheric plasma model was constructed as a physical model using magneto hydrodynamic equation, empirical model, and artificial intelligence (AI) model.
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| Free Research Field |
地球惑星科学
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