[1] Tongji Univ, Sch Ocean & Earth Sci, State Key Lab Marine Geol, Shanghai, Peoples R China
[2] Polar Res Inst China, SOA Key Lab Polar Sci, Shanghai, Peoples R China
[3] China Res Inst Radiowave Propagat, Natl Key Lab Electromagnet Environm, Qingdao, Peoples R China
[4] Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX USA
[5] Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX USA
[6] Denali Sci, Healy, AK USA