Statistical properties of molecular ions in the ring current and their possible supply mechanisms from the ionosphere: Arase and EISCAT radar observations


Kanako Seki1, Masayoshi Takada1, Kunihiro Keika2, Satoshi Kasahara1, Shoichiro Yokota3, Ayako Matsuoka4, Mariko Teramoto5, Nana Higashio1,6, Yasunobu Ogawa7, Kazushi Asamura6, Yoshizumi Miyoshi8 and Iku Shinohara6, (1)University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan, (2)University of Tokyo, Graduate School of Science, Bunkyo-ku, Japan, (3)Osaka University, Osaka, Japan, (4)ISAS/JAXA, Sagamihara, Japan, (5)Nagoya University, ISEE, Nagoya, Japan, (6)ISAS, JAXA, Sagamihara, Japan, (7)NIPR National Institute of Polar Research, Tachikawa, Tokyo, Japan, (8)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan