Takanobu Amano¹, Takuma Katou², Naritoshi Kitamura³, Mitsuo Oka⁴, Yosuke Matsumoto⁵, Masahiro Hoshino³, Yoshifumi Saito⁶, Shoichiro Yokota⁷, Barbara L Giles⁸, William R Paterson⁹, Christopher T Russell¹⁰, Olivier Le Contel¹¹, James Webster¹², Per-Arne Lindqvist¹³, Drew L. Turner¹⁴, Joseph F. Fennell¹⁵ and J Bernard Blake¹⁴, (1)University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan, (2)University of Tokyo, Tokyo, Japan, (3)The University of Tokyo, Tokyo, Japan, (4)UC Berkeley-Space Sciences Lab, Berkeley, CA, United States, (5)Chiba University, Department of Physics, Chiba, Japan, (6)Inst Space & Astronautical Sci, Kanagawa, Japan, (7)ISAS/JAXA, Sagamihara, Japan, (8)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (9)NASA Goddard Space Flight Center, Geospace Physics Laboratory, Greenbelt, MD, United States, (10)University of California Los Angeles, Department of Earth Planetary and Space Sciences, Los Angeles, CA, United States, (11)Laboratoire de Physique des Plasmas (UMR7648), CNRS/Ecole Polytechnique/UPMC/Univ. Paris Sud/Obs. de Paris, Paris, France, (12)University of Colorado, Boulder, CO, United States, (13)KTH Royal Institute of Technology, Stockholm, Sweden, (14)The Aerospace Corporation, Los Angeles, CA, United States, (15)University of Colorado at Boulder, LASP, Boulder, CO, United States