1. Planetary Plasma and Atmospheric Research Center; Tohoku University; Sendai Japan
2. Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya Japan
3. Space Environment Research Center; Kyushu University; Fukuoka Japan
4. Space Sciences Laboratory; University of California; Berkeley California USA
5. Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
6. Department of Physics and Astronomy; University of Calgary; Calgary, Alberta Canada
7. Department of Communication Systems; Lancaster University; Lancaster UK