The characteristics of daytime aurora at South Pole Station
The characteristics of daytime auroras are examined by using all-sky camera photographs taken at South Pole Station in Antarctica. Several remarkable results were found from our analysis. (1) The auroral structure near the noon sector (10-14 MLT) mostly shows coronal forms with ray structure. (2) Th...
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National Institute of Polar Research
1996
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fttriple:oai:gotriple.eu:oai:doaj.org/article:84de55085406464da4b2583c7f52d3ae 2023-05-15T14:04:01+02:00 The characteristics of daytime aurora at South Pole Station Masaru Ayukawa Kazuo Makita 1996-11-01 https://doi.org/10.15094/00008942 https://doaj.org/article/84de55085406464da4b2583c7f52d3ae en other eng National Institute of Polar Research doi:10.15094/00008942 0085-7289 2432-079X https://doaj.org/article/84de55085406464da4b2583c7f52d3ae undefined Antarctic Record, Vol 40, Iss 3, Pp 267-305 (1996) geo socio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1996 fttriple https://doi.org/10.15094/00008942 2023-01-22T19:14:05Z The characteristics of daytime auroras are examined by using all-sky camera photographs taken at South Pole Station in Antarctica. Several remarkable results were found from our analysis. (1) The auroral structure near the noon sector (10-14 MLT) mostly shows coronal forms with ray structure. (2) The luminostity of coronal form auroras is generally weaker than that of the midnight discrete auroras. However, their dynamical motion and their luminosity increase during the geomagnetic disturbed period. (3) Activity of daytime coronal auroras is dependent on the North-South component of Interplanetary Magnetic Field (IMF-Bz) variations. (4) The characteristics of morning sector auroras (06-10 MLT) are quite different from afternoon sector auroras (14-18 MLT). This tendency strongly suggests that there are asymetrical auroral phenomena between the morning and the afternoon regions. Article in Journal/Newspaper Antarc* Antarctica South pole South pole Unknown South Pole |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo socio |
spellingShingle |
geo socio Masaru Ayukawa Kazuo Makita The characteristics of daytime aurora at South Pole Station |
topic_facet |
geo socio |
description |
The characteristics of daytime auroras are examined by using all-sky camera photographs taken at South Pole Station in Antarctica. Several remarkable results were found from our analysis. (1) The auroral structure near the noon sector (10-14 MLT) mostly shows coronal forms with ray structure. (2) The luminostity of coronal form auroras is generally weaker than that of the midnight discrete auroras. However, their dynamical motion and their luminosity increase during the geomagnetic disturbed period. (3) Activity of daytime coronal auroras is dependent on the North-South component of Interplanetary Magnetic Field (IMF-Bz) variations. (4) The characteristics of morning sector auroras (06-10 MLT) are quite different from afternoon sector auroras (14-18 MLT). This tendency strongly suggests that there are asymetrical auroral phenomena between the morning and the afternoon regions. |
format |
Article in Journal/Newspaper |
author |
Masaru Ayukawa Kazuo Makita |
author_facet |
Masaru Ayukawa Kazuo Makita |
author_sort |
Masaru Ayukawa |
title |
The characteristics of daytime aurora at South Pole Station |
title_short |
The characteristics of daytime aurora at South Pole Station |
title_full |
The characteristics of daytime aurora at South Pole Station |
title_fullStr |
The characteristics of daytime aurora at South Pole Station |
title_full_unstemmed |
The characteristics of daytime aurora at South Pole Station |
title_sort |
characteristics of daytime aurora at south pole station |
publisher |
National Institute of Polar Research |
publishDate |
1996 |
url |
https://doi.org/10.15094/00008942 https://doaj.org/article/84de55085406464da4b2583c7f52d3ae |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_source |
Antarctic Record, Vol 40, Iss 3, Pp 267-305 (1996) |
op_relation |
doi:10.15094/00008942 0085-7289 2432-079X https://doaj.org/article/84de55085406464da4b2583c7f52d3ae |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00008942 |
_version_ |
1766274945318387712 |