Lei Dai¹, Yong Ren², Wen Li³, Xin Tao⁴, Chi Wang⁵, Binbin Tang⁵, Benoit Lavraud⁶, Yifan Wu⁴, James L Burch⁷, Barbara L Giles⁸, Olivier Le Contel⁹, Roy B Torbert¹⁰, Christopher T Russell¹¹, Robert J Strangeway¹², James Webster¹³ and Per-Arne Lindqvist¹⁴, (1)NSSC National Space Science Center, CAS, Beijing, China, (2)NSSC, CAS, China, Beijing, China, (3)Boston University, Boston, MA, United States, (4)University of Science and Technology of China, Hefei, China, (5)CSSAR, CAS, Beijing, China, (6)IRAP/CNRS, Toulouse, France, (7)Southwest Research Institute San Antonio, San Antonio, TX, United States, (8)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (9)Laboratoire de Physique des Plasmas (UMR7648), CNRS/Ecole Polytechnique/UPMC/Univ. Paris Sud/Obs. de Paris, Paris, France, (10)Univ New Hampshire, Durham, NH, United States, (11)University of California Los Angeles, Department of Earth Planetary and Space Sciences, Los Angeles, CA, United States, (12)UCLA IGPP/ESS, Los Angeles, CA, United States, (13)University of Colorado, Boulder, CO, United States, (14)KTH Royal Institute of Technology, Stockholm, Sweden