1. Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
2. College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing China
3. Department of Earth and Planetary Science Kyushu University Fukuoka Japan
4. Beijing National Observatory of Space Environment Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
5. High Altitude Observatory National Center for Atmospheric Research Boulder CO USA
6. Haystack Observatory Massachusetts Institute of Technology Westford MA USA
7. Department of Physics and Astronomy Clemson University Clemson SC USA
8. Catholic University of America Washington DC USA
9. Department of Terrestrial and Planetary Geodesy Centre National d'Etudes Spatiales Toulouse France
10. Heilongjiang Mohe National Observatory of Geophysics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China