Postnoon aurora observed at Zhongshan Station, Antarctica - A case study -

• Main Authors: Kazuo Makita, Masayuki Kikuchi, Natsuo Sato, Masaru Ayukawa, Xing Wang, Huigen Yang, Ruiyuan Liu
• Format: Report
• Language: English
• Published: Takushoku University/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Polar Research Institute of China/Polar Research Institute of China/Polar Research Institute of China 1998
• Subjects: Zhongshan; Zhongshan Station; Antarc*; Antarctica; Spitzbergen
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4234; http://id.nii.ac.jp/1291/00004234/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4234&item_no=1&attribute_id=18&file_no=1

The characteristics of postnoon auroras are examined with all-sky TV data at Zhongshan (invariant latitude 74.49°in Antarctica). From a comparison between ground aurora and DMSP particle data, energetic electrons higher than 1 keV are responsible for the postnoon band aurora. It is remarkable that the postnoon band aurora shows a periodic latitudinal movement with its period about 125s to 160s. It is also noted that a bright region moves from the west to the east along the longitudinal direction within the band aurora. These charactreristics are partly similar to auroral behavior obtained in our previous observations at Ny-Alesund in Spitzbergen.