2012 Fiscal Year Final Research Report
Study of day-to-day variability of equatorial Spread-F based on large-area observations over India, southeast Asia, and Pacific
| Project/Area Number |
22403011
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Akinori 京都大学, 理学研究科, 准教授 (10311739)
OOTSUKA Yuichi 名古屋大学, 太陽地球環境研究所, 准教授 (40314025)
HASHIGUCHI Hiroyuki 京都大学, 生存圏研究所, 准教授 (90293943)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIOKAWA Kazuo 名古屋大学, 太陽地球環境研究所, 教授 (80226092)
ISHII Mamoru 独)情報通信研究機構, 電磁波計測研究センター, 推進室長 (20359003)
MARUYAMA Takashi (独)情報通信研究機構, 上席研究員 (80359017)
SAITO Susumu (独)電子航法研究所, 航法システム領域, 主幹研究員 (40392716)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 赤道スプレッド F 現象 / 衛星ビーコン観測 / アジア太平洋 / 国際共同研究 |
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| Research Abstract |
Equatorial Spread-F (ESF) is a one of the most intense ionospheric disturbance that causes severe scintillation to the satellite-ground communications, and degradation of the GPS locations. In this study we deployed large -area observation network of the ionosphere from Asia and Pacific regions by means of radars, nightglow imagers, and satellite-ground beacon receivers. We investigated yet-unknown day-to-day variability of ESF , and found that the ESF is generated from the enhanced Large -Scale Wave Structure (LSWS) of the ionosphere. We also found detailed behavior of ESF at post -midnight period that enhances under the low-solar conditions.
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[Journal Article] On seeding, large-scale wave structure, equatorial spread F, and scintillations over Vietnam, Geophys2011
Author(s)
Tsunoda, R. T., M. Yamamoto, T. Tsugawa, T. L. Hoang, S. Tulasi Ram, S. V. Thampi, H. D. Chau, and T. Nagatsuma
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Journal Title
Res. Lett
Volume: 38
Pages: L20102
DOI
Peer Reviewed
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