Hiraiso Solar Terrestrial Research Center/Institute of Space and Astronautical Science/Institute of Science Research, Boston College
抄録(英)
To understand the processes of formation of polar arcs together with patches, an investigation has been made based on the simultaneous observations with an all-sky imager at Qaanaaq in Greenland and Akebono (EXOS-D) satellite. On some occasions, we have identified coexistence of polar arcs with patches. Specifically, polar arcs were replaced by patches or vise versa. These phenomena have been seen in the transient periods of IMF polarity change. Growth and decay of polar arcs with respect to the IMF polarity change has also been investigated with a particular interest in a delay time. The delay time was in a range from 30min to 1 hour. Since a life time of patches seems to be longer than 1hour, the coexistence was noticed by the all-sky imager at Qaanaaq.
雑誌書誌ID
AA10756224
雑誌名
Proceedings of the NIPR Symposium on Upper Atmosphere Physics
Coexistence of polar arcs with patches ─Results from the simultaneous observations by Akebono satellite and all-sky imager at Qaanaaq─
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KJ00000035938
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概要
