Aurora Morphology in the dayside

摘要

Day-side aurora phenomena are examined by using TV image data obtained at Ny-Alsund in Svalbard, Godhavn in Greenland and Zhongshan Station, Antarctica. Results are summarized as follows. During the quiet period, in the pre- and Post-noon sectors, (1) Weak arc (Sun-aligned arc), (2) Corona aurora and(3) Band Aurora are observed in these stations. During disturbed period, Corona aurora and (3) Band Aurora are also observed in the pre- and post-noon sectors.