南米におけるイメージング・リオメータのネットワーク観測

概要

論文の詳細を見る
Since 1999 the 38.2 MHz imaging riometer (IRIS) has been operated at INPE Southern Space Observatory (SSO; geographic lat. 29.7°S) in Brazilian geomagnetic anomaly region. The ionospheric absorption event characterized by energetic particle precipitation was detected during the strong magnetic storm on July 15,2000, called as 'Bastille Day Storm' at SSO. The absorption extended to the east-west directions exceeding the IRIS field-of-view (FOV) (about 300km×300km) at the higher-latitude part showing a motion toward south-west direction. However, spatial scale and shape of the absorption region are not exactly determined because of the relatively small IRIS-FOV. Thus, succeeding to the second IRIS installation at Punta Arenas in Chile in 2003, we installed a third IRIS at Concepcion in Chile in 2004. An initial result from simultaneous observations between Concepcion and Punta Arenas is presented.
拓殖大学の論文
2004-10-20