*Geetashree KAKOTI¹、Kazuo Shiokawa¹、Mala S Bagiya²、Geeta Vichare²、Shreedevi P.R.¹、Nozomu Nishitani¹、Yuichi Otsuka¹、Atsuki Shinbori¹、Michi Nishioka³、Septi Perwitasari³ (1.Institute for Space-Earth Environmental Research, Nagoya University, 、2.Indian Institute of Geomagnetism, Navi Mumbai, India、3.National Institute of Information and Communications Technology (NICT), Japan)