Geomagnetic activity dependence of the auroral electron precipitation spectrum estimated from EISCAT measurements
Shin-ichiro Oyama1,2, Ilkka I Virtanen3, Raita Tero4, Habtamu Tesfaw W.3, Lauri Holappa3, Yoshizumi Miyoshi5, Lei Cai3, Heikki Vanhamaki3, Anita Taina Aikio3, Yasunobu Ogawa6 and Keisuke Hosokawa7, (1)University of Oulu, Oulu, Finland, (2)ISEE, Nagoya University, Nagoya, Japan, (3)University of Oulu, Space Physics and Astronomy Research Unit, Oulu, Finland, (4)University of Oulu, Sodankyla Geophysical Observatory, Sodankyla, Finland, (5)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, (6)NIPR National Institute of Polar Research, Tachikawa, Tokyo, Japan, (7)University of Electro-Communications, Chofu, Tokyo, Japan