@article{oai:nipr.repo.nii.ac.jp:00004203,
 author = {Obara, Takahiro},
 journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics},
 month = {Jan},
 note = {P(論文), The auroral arcs seen at very high latitudes have traditionally been called "high latitude arcs" or "polar cap arcs" and have received much attention during last two decades. In this paper we overview the observational signatures of "polar cap arcs" with paying a particular interest in studying more dynamical meso-scale features relating to the polar cap arc phenomena. We next demonstrate recent progress in the issues which have remained unanswered based on the Akebono (EXOS-D) measurements along with simultaneous ground-based observations. We lastly emphasize the importance of polar cap arc phenomena in understanding the basic magnetospheric processes during northward IMF conditions with some implementation plans.},
 pages = {29--41},
 title = {Akebono observations of polar cap arcs -including review -},
 volume = {10},
 year = {1997}
}