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Observations of the Aurora by Visible All-Sky Camera at Jang Bogo Station, Antarctica

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Observations of the Aurora by Visible All-Sky Camera at Jang Bogo Station, Antarctica
Other Titles
장보고기지에서의 오로라 관측
Jee, Geonhwa
Ham, Young-Bae
Choi, Yoonseung
Kim, Eunsol
Lee, Changsup
Kwon, Hyuck-Jin
Trondsen, Trond S.
Kim, Jieun
Kim, Jeong-Han
Astronomy & Astrophysics
auroraauroral occurrencepolar ionosphereall-sky cameraJang Bogo Station (JBS)antarctica
Issue Date
Jee, Geonhwa, et al. 2021. "Observations of the Aurora by Visible All-Sky Camera at Jang Bogo Station, Antarctica". Journal of Astronomy and Space Sciences, 38(4): 203-215.
The auroral observation has been started at Jang Bogo Station (JBS), Antarctica by using a visible All-sky camera (v-ASC) in 2018 to routinely monitor the aurora in association with the simultaneous observations of the ionosphere, thermosphere and magnetosphere at the station. In this article, the auroral observations are introduced with the analysis procedure to recognize the aurora from the v-ASC image data and to compute the auroral occurrences and the initial results on their spatial and temporal distributions are presented. The auroral occurrences are mostly confined to the northern horizon in the evening sector and extend to the zenith from the northwest to cover almost the entire sky disk over JBS at around 08 MLT (magnetic local time; 03 LT) and then retract to the northeast in the morning sector. At near the magnetic local noon, the occurrences are horizontally distributed in the northern sky disk, which shows the auroral occurrences in the cusp region. The results of the auroral occurrences indicate that JBS is located most of the time in the polar cap near the poleward boundary of the auroral oval in the nightside and approaches closer to the oval in the morning sector. At around 08 MLT (03 LT), JBS is located within the auroral oval and then moves away from it, finally being located in the cusp region at the magnetic local noon, which indicates that the location of JBS turns out to be ideal to investigate the variabilities of the poleward boundary of the auroral oval from long-term observations of the auroral occurrences. The future plan for the ground auroral observations near JBS is presented.
Jang Bogo Station
Appears in Collections  
2021-2021, Occurrence of aurora and their correlations with polar upper atmospheric and climate variabilities (21-21) / Jee, Geonhwa (PE21020)
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