A
Akira Kadokura
Researcher at National Institute of Polar Research
Publications - 135
Citations - 1613
Akira Kadokura is an academic researcher from National Institute of Polar Research. The author has contributed to research in topics: Substorm & Cosmic ray. The author has an hindex of 20, co-authored 124 publications receiving 1365 citations. Previous affiliations of Akira Kadokura include Graduate University for Advanced Studies.
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Journal ArticleDOI
Magnetic Conjugacy of Pc1 Waves and Isolated Proton Precipitation at Subauroral Latitudes: Importance of Ionosphere as Intensity Modulation Region
Mitsunori Ozaki,Kazuo Shiokawa,Richard B. Horne,Mark J. Engebretson,Marc Lessard,Yasunobu Ogawa,Yasunobu Ogawa,Keisuke Hosokawa,Masahito Nose,Yusuke Ebihara,Akira Kadokura,Akira Kadokura,Satoshi Yagitani,Yoshizumi Miyoshi,Shion Hashimoto,Shipra Sinha,Ashwini K. Sinha,Gopi Seemala,Chae-Woo Jun +18 more
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Observed correlation between pulsating aurora and chorus waves at Syowa Station in Antarctica: A case study
Mitsunori Ozaki,Satoshi Yagitani,Kazumasa Ishizaka,Kazuo Shiokawa,Yoshizumi Miyoshi,Akira Kadokura,Hisao Yamagishi,Ryuho Kataoka,Akimasa Ieda,Yusuke Ebihara,Natsuo Sato,Isamu Nagano +11 more
TL;DR: In this article, a high correlation between a pulsating auroral patch and grouped chorus waves was observed on 17 April 2006 at Syowa Station in Antarctica, and the spatial distribution of aurora-chorus correlation coefficients was evaluated in order to determine the source region.
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On the simultaneity of substorm onset between two hemispheres
Akira Morioka,Yoshizumi Miyoshi,Fuminori Tsuchiya,Hiroaki Misawa,Yasumasa Kasaba,T Asozu,T Asozu,S. Okano,Akira Kadokura,Natsuo Sato,Hiroshi Miyaoka,Kiyohumi Yumoto,George K. Parks,Farideh Honary,Jean-Gabriel Trotignon,Pierrette Décréau,Bodo W. Reinisch +16 more
TL;DR: In this paper, the authors showed that the buildup of the field-aligned acceleration region at the auroral breakup does not result only from the magnetospheric process and that the local auroral ionosphere finally controls and/or ignites the substorm onset.
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Detailed analysis of a substorm event on 6 and 7 June 1989. 2. Stepwise auroral bulge evolution during expansion phase
Akira Kadokura,Akira-Sessai Yukimatu,Masaki Ejiri,Takasi Oguti,Michael Pinnock,Peter R. Sutcliffe +5 more
TL;DR: In this article, the authors analyzed the auroral bulge evolution during the expansion phase of an isolated substorm, which was observed by the UV imager aboard the Akebono satellite.
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Polar patrol balloon experiment in Antarctica
M. Ejiri,Akira Kadokura,Takeo Hirasawa,Natsuo Sato,Ryoichi Fujii,Hiroshi Miyaoka,Jun Nishimura,Nobuyuki Yajima,Takamasa Yamagami,Susumu Kokubun,Hiroshi Fukunishi,Manabu D. Yamanaka,Masahiro Kodama +12 more
TL;DR: The Polar Patrol Balloon (PPB) project aims at establishing a station network in the stratosphere over the Antarctic region for geophysical and astrophysical observations as discussed by the authors, and three test flights in 1987 and 1990 at Syowa Station have convinced us that PPB would come back to the launching site with a good possibility.