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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Simultaneous observations of Pc 1 micropulsation activity and stratospheric electrodynamic perturbations on 27 January 2003
Edgar A. Bering,Mark J. Engebretson,Robert H. Holzworth,Akira Kadokura,M. Kokorowski,Brandon Reddell,J. L. Posch,Hisao Yamagishi +7 more
TL;DR: The 2nd Polar Patrol Balloon campaign (2nd-PPB) was carried out at Syowa Station in Antarctica during 2002-2003 as mentioned in this paper, where identical stratospheric balloon payloads were launched as close together in time as allowed by weather conditions to constitute a cluster of balloons during their flights.
Slow Contraction of Flash Aurora Induced by an Isolated Chorus Element Ranging From Lower‐Band to Upper‐Band Frequencies in the Source Region
Mitsunori Ozaki,Satoshi Yagitani,Kazuo Shiokawa,Yoshimasa Tanaka,Yasunobu Ogawa,Keisuke Hosokawa,Yoshiya Kasahara,Yusuke Ebihara,Yoshizumi Miyoshi,Kousuke Imamura,Ryuho Kataoka,Shin-ichiro Oyama,Teppei Chida,Akira Kadokura +13 more
TL;DR: In this paper , the authors report the temporal characteristics of flash aurora that depend on the chorus frequency width and the sweep rate, finding that the contraction time increases more than the expansion time in patchy auroral variations, due to the difference in the minimum electron energies resonated with the chorus wave packet away from the equatorial source to higher latitudes.
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Instantaneous Achievement of the Hall and Pedersen–Cowling Current Circuits in Northern and Southern Hemispheres During the Geomagnetic Sudden Commencement on 12 May 2021
Takashi Kikuchi,Tohru Araki,Kumiko K. Hashimoto,Yusuke Ebihara,Takashi Tanaka,Yukitoshi Nishimura,Geeta Vichare,A. K. Singh,Jaroslav Chum,Keisuke Hosokawa,I. Tomizawa,Yoshimasa Tanaka,Akira Kadokura +12 more
TL;DR: In this paper , a consistent understanding of observation, theoretical model, and simulation with the geomagnetic sudden commencement (SC) observed in the morning and afternoon at high and middle latitudes in the northern and southern hemispheres and at the noontime equator on 12 May 2021 was presented.
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Electron spectrum in 10-1000 gev from bets & ppb-bets and future balloon observation
T. Tamura,Shoji Torii,Kenji Yoshida,Hisashi Kitamura,Takamasa Yamagami,Jin Chang,Issei Iijima,Akira Kadokura,K. Kasahara,Y. Katayose,Tadashi Kobayashi,Yoshiko Komori,Yukihiko Matsuzaka,K. Mizutani,H. Murakami,Michiyoshi Namiki,J. Nishimura,Shigeo Ohta,Yoshitaka Saito,M. Shibata,N. Tateyama,Hisao Yamagishi,T. Yuda +22 more
TL;DR: In this paper, the authors carried out electron observations with balloons to investigate acceleration and propagation of electrons in the universe and obtained electron energy spectrum from 10 to 100 GeV with it.
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Preliminary Results of Auroral Dynamics Observed by the ATV-VIS Imager aboard EXOS-D (AKEBONO)
TL;DR: The visible (Oxygen green line: 557.7 nm) TV camera aboard EXOS-D (Akebono) takes successive auroral images every 8 seconds, which are characterized as a snapshot image of a wide area with high spatial and temporal resolutions.