1. Department of Physics; National Cheng Kung University; Tainan Taiwan
2. Earth Dynamical System Research Center; National Cheng Kung University; Tainan Taiwan
3. Physics Department; Pennsylvania State University Lehigh Valley; Center Valley Pennsylvania USA
4. Institute of Space, Astrophysical and Plasma Sciences; National Cheng Kung University; Tainan Taiwan
5. Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
6. Space Sciences Laboratory; University of California; Berkeley California USA
7. Department of Cosmosciences; Hokkaido University; Sapporo Japan
8. Institute of Space Science; National Central University; Jhongli Taiwan