1. State Oceanic Administration Key Laboratory for Polar Science; Polar Research Institute of China; Shanghai China
2. Space Sciences Division; SSTD, Rutherford Appleton Laboratory; Chilton, Didcot, Oxfordshire UK
3. Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science; Kyoto University; Kyoto Japan
4. Institute of Geophysics, China Earthquake Administration; Beijing China
5. Space Environment Research Center; Kyushu University; Fukuoka Japan