2013 Fiscal Year Final Research Report
3D imaging of polar cap patches with radio and optical measurements
| 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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| 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 |
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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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[Journal Article] GPS Total Electron Content Variations Associated with Poleward Moving Sun Aligned Arcs2012
Author(s)
Jayachandran, P. T., K. Hosokawa, K. Shiokawa, Y. Otsuka, C. J. Watson, S. C. Mushini, J. W. MacDougall, P. Prikryl, R. Chadwick, and T. D. Kelly
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Journal Title
Journal of Geophysical Research
Volume: 117
DOI
Peer Reviewed
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