[1] Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing, Peoples R China
[2] Luoyang Normal Univ, Inst Space Phys, Luoyang, Peoples R China
[3] Shandong Univ, Inst Space Sci, Shangdong Prov Key Lab Opt Astron & Solar Terr En, Weihai, Peoples R China
[4] Peking Univ, Beijing, Peoples R China