Japan Geoscience Union Meeting 2014

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International Session (Oral)

Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM09_28AM1] VarSITI - Variability of the Sun and Its Terrestrial Impact

Mon. Apr 28, 2014 9:00 AM - 10:45 AM 211 (2F)

Convener:*Kazuo Shiokawa(Solar-Terrestrial Environment Laboratory, Nagoya University), Taro Sakao(Institute of Space and Astronautical Science Japan Aerospace Exploration Agency), Toshihiko Hirooka(Department of Earth and Planetary Scinences, Kyushu University), Chair:Kunihiro Keika(Solar-Terrestrial Environment Laboratory, Nagoya University), Taro Sakao(Institute of Space and Astronautical Science Japan Aerospace Exploration Agency)

9:45 AM - 10:00 AM

[PEM09-04] Global dynamics of the inner magnetosphere derived from long term observation by Akebono

*Yoshiya KASAHARA1, Ayako MATSUOKA2, Tsugunobu NAGAI3, Atsushi KUMAMOTO4, Takumi ABE2 (1.Kanazawa University, 2.JAXA/ISAS, 3.Tokyo Inst. Tech., 4.Tohoku Univ.)

Keywords:Akebono, Inner Magnetosphere, Radiation belt, Aurora, Plasma wave

Akebono is a Japanese scientific spacecraft which was launched in February, 1989 for observations of the Earth's magnetosphere, and has been operated successfully for 25 years. The regular data acquisition of MGF, PWS, VLF, TED, and RDM is still continued at stations in Japan and Sweden. The operation of the Akebono will be extended until March, 2015 (FY2014) in order to realize collaborative measurements with the Van Allen Probes, and further extension to the end of FY2016 is expected as an optional mission. Because of its unique orbit, the stored data is quite valuable for studying plasma physics in the auroral region as well as the radiation belt. In the present paper, we introduce important achievements of Akebono observation and discuss future science to be obtained from the long term observation data.