2010 Fiscal Year Final Research Report
Radar imaging observations of the field-aligned irregularities at low-latitude ionosphere
| Project/Area Number |
20684021
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Nagoya University |
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Principal Investigator |
OTSUKA Yuichi 名古屋大学, 太陽地球環境研究所, 准教授 (40314025)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 超高層物理学 / 地球電磁気 / 地球観測 / リモートセンシング / 電離圏 |
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| Research Abstract |
We have analyzed E- and F-region field-aligned irregularities (FAIs) observed by a VHF backscatter radar with an operating frequency of 30.8 MHz in Indonesia and revealed statistically local time, seasonal, and solar activity variations of the FAI occurrence rates. Propagation characteristics and drift velocities of the FAIs are also investigated. Especially, we have studied the post-midnight F-region FAIs and suggested that the post-midnight FAIs are likely associated with either plasma bubbles or medium-scale traveling ionospheric disturbances (MSTIDs).
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