@article{oai:nipr.repo.nii.ac.jp:00004041, author = {Yumoto,Kiyohumi and Saito,Takao and Chao,J.K. and Chen,A.J. and Sobari,O. and Pardede,M. and Soegijo,J.}, journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics}, month = {Feb}, note = {P(論文), Magnetic pulsation data obtained simultaneously at northern and southern stations, i. e., Chung-Li (Ф=13.8°, Λ=189.5°), Taiwan, and Cepu (-18.3°, 182.5°), Indonesia, have been analyzed to clarify characteristics of Pc 3 pulsations at very low latitudes. Near local noon, although Pc 3 amplitudes at Cepu were slightly larger than those at Chung-Li, wave packets with ∿3-5min duration appeared concurrently at the very low latitudes (|Ф|<20°). It is found that the senses of Pc 3 polarizations at |Ф|~10°-20° were statistically opposite to those at conjugate stations of |Ф|~35°. Pc 3 polarization ellipses at the very low latitudes changed the major axis orientation predominantly from NW-SE (NE-SW) in the morning to NE-SW/NW-SE (NW-SE) in the afternoon in the northern (southern) hemisphere, which is consistent with the characteristics at conjugate stations of |Ф~35°.}, pages = {121--129}, title = {Pc 3 magnetic pulsations observed at very low latitudes (|Φ|<20゜)}, volume = {1}, year = {1988} }