| Project/Area Number |
23740366
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
HOSOKAWA Keisuke 電気通信大学, 情報理工学(系)研究科, 准教授 (80361830)
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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 |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 超高層大気環境 / 極冠域電離圏 / ポーラーキャップパッチ / ポーラーキャップオーロラ / 大気光観測 / ポーラーパッチ / レーダー観測 / 極冠オーロラ / 極域電離圏プラズマ |
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| Research Abstract |
We have conducted three dimensional observations of ionospheric phenomena in the polar cap region (polar cap patches and polar cap auroral arcs) by combining a highly-sensitive all-sky airglow imager and phased-array incoherent scatter radar system at Resolute Bay, Canada. Through the analysis of the campaign measurements, we have obtained various interesting results on the dynamical variations of the polar cap ionospheric phenomena. Outstanding results are (1) global-scale imaging of polar cap patches showing the spatial extent of patches, (2) spatial distribution of plasma irregularities in the vicinity of polar cap patches, and (3) three dimensional visualization of the electrodynamic structure behind polar cap aurora. These results are of particular importance for understanding and predicting the possible impact of the polar cap ionospheric phenomena on the trans-ionospheric satellite communication environment.
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