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[文献書誌] Miyaoka,H.,T.Hirasawa,K.Yumoto & Y.Tanaka: "Low latitude aurorae on October 21,1989." Proc.Japan Academy. 66(B). 47-51 (1990)
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[文献書誌] Sato,M.& Y.Katoh: "Acquisition of CNA data from a multiーbeam riometer and their 2ーdimensional color graphicーquick lock system by a personal computer." Proc.RIA,Nagoya Univ.37. 62-72 (1990)
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[文献書誌] Shiokawa,K.,& H.Fukunishi: "Dependences of auroral 5577ーA and 6300ーA emission rates on thermospheric density variations." Proc.of the NIPR symp.on Upper Atomos.Phys.3. 24-31 (1990)
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[文献書誌] Tanaka,Y.,M.Nishino,& A.Iwata: "Magnetic stormーrelated energetic electrons and magnetospheric electric fields penetrating into the lowーlatitude magnetosphere(L=1.5)." Planet.Space Sci.38. 1051-1059 (1990)
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[文献書誌] Yumoto,K.: "Evidence of magnetospheric cavity Pi2 waves" J.Geomag.Geoelectr.42. 1281-1290 (1990)
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[文献書誌] Yumoto,K.,K.Takahashi,T.Sakurai,P.R,Sutcliffe,S.Kokubun et al.: "Multiple groundーbased and satellite observations of global Pi2 magnetic pulsations." J.Geophys.Res.95. 15175-15184 (1990)