@article{oai:nipr.repo.nii.ac.jp:00008135,
 author = {桑島, 正幸 and KUWASHIMA, Masayuki},
 journal = {南極資料},
 month = {Feb},
 note = {P(論文), 極光帯(L=8.9)から中緯度(L=1.8)ま,ほぼ同じ子午線に沿って位置する観測点で得られた資料をもとにして,Pi 2型磁気脈動の波動特性を調べた.Pi 2はsubstorm expansionの開始と同時に極光帯から中緯度に至る広い領域にわたって観測されるPi 2のamplitude, spectralおよびpolarizationの特性や,共役点のふるまいを見ると,auroral ovalに根をもつ磁力線のtnrsional oscillationによってPi 2が発生してくるというmodelが考えられる., Spectral characteristics of magnetic Pi 2 pulsations are studied in detail by using data obtained simultaneously over a wide latitudinal range from the auroral region (L=8.9) through low-latitudes (L=1.8). Pi 2 is observed simultaneously with the onset of a substorm expansion over the wide latitudinal range with a common predominant period showing a primary amplitude maximum at the auroral oval and a secondary one near the plasmapause. The Pi 2 period generally becomes shorter (longer) when the associated auroral breakup starts at lower (higher) latitudes. Pi 2 is also observed simultaneously at a pair of conjugate stations in the auroral region with similar waveforms. These observational results indicate that the most plausible model of Pi 2 is the torsional hydromagnetic oscillation of the geomaenetic field lines anchored on the auroral oval.},
 pages = {266--275},
 title = {高緯度から中緯度に至るULF観測から考察されるPi 2型磁気脈動の発生機構(d.磁気圏内のULF波動)(第2回極域における電離圏磁気圏総合観測シンポジウム : Part I)},
 volume = {68},
 year = {1980},
 yomi = {クワシマ, マサユキ}
}