Study on formation and depletion processes of Earth's radiation belts through nonlinear wave-particle interactions
| Project/Area Number |
26287120
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial 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 | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
小路 真史 名古屋大学, 宇宙地球環境研究所, 特任助教 (80722082)
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| Co-Investigator(Renkei-kenkyūsha) |
KATOH Yuto 東北大学, 理学部, 准教授 (60378982)
EBIHARA Yusuke 京都大学, 生存圏研究所, 准教授 (80342616)
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| Research Collaborator |
HIKISHIMA Mitsuru
SUMMERS Danny
KLETZING Craig
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2014: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
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| Keywords | 波動粒子相互作用 / コーラス波 / サイクロトロン波 / 放射線帯 / 非線形過程 / 計算機シミュレーション / プラズマ波動 / 粒子加速 / 超高層物理学 / プラズマ科学 / 磁気圏 / 内部磁気圏 / コーラス放射 / テスト粒子シミュレーション / EMIC波 / プラズマ圏 |
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| Outline of Final Research Achievements |
Some of energetic electrons injected into the inner magnetosphere are accelerated effective to a few MeV energy ranges by whistler mode chorus waves, resulting in rapid formation of the outer radiation belt. The MeV electrons of the outer radiation belt can be scattered into the loss cone by electromagnetic ion cyhclotron wave. The formation and loss processes of the outer radiation belt are successfully reproduced by computer simulations.
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Report
(4 results)
Research Products
(33 results)
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[Journal Article] Van Allen probes, NOAA, GOES, and ground observations of an intense EMIC wave event extending over 12 h in magnetic local time2015
Author(s)
M. Engebretson, J. Posch, J. Wygant, C. Kletzing, M. Lessard, C. Huang, H. Spence, C. Smith, H. Singer, Y. Omura, R. Horne, G. Reeves, D. Baker, M. Gkioulidou, K. Oksavik, I. Mann, T. Raita, K. Shiokawa
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Journal Title
J. Geophy. Res. Space Physics
Volume: 120
Issue: 7
Pages: 5465-5488
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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