About AMEMIYA H
About RIKEN(Inst. Physical and Chemical Research), Saitama, JPN
About NAKAMURA Y
About ISAS(Inst. Space and Astronautical Science), Kanagawa, JPN
About Journal of Geomagnetism and Geoelectricity
About D region
About Ionosphere,thermosphere
About 観測ロケット
About D層
About 負イオン