Affiliation: | 1.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China ;2.Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China ;3.University of the Chinese Academy of Sciences, Beijing, 100049, China ;4.School of Mathematics and Physics, North China Electric Power University, Baoding, 071003, China ; |