A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification
Aurora is a very important geophysical phenomenon in the high latitudes of Arctic and Antarctic regions, and it is important to make a comparative study of the auroral morphology between the two hemispheres. Based on the morphological characteristics of the four labeled dayside discrete auroral type...
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ftcopernicus:oai:publications.copernicus.org:gi62077 2023-05-15T13:55:28+02:00 A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification Yang, Qiuju Hu, Ze-Jun 2019-01-11 application/pdf https://doi.org/10.5194/gi-7-113-2018 https://gi.copernicus.org/articles/7/113/2018/ eng eng doi:10.5194/gi-7-113-2018 https://gi.copernicus.org/articles/7/113/2018/ eISSN: 2193-0864 Text 2019 ftcopernicus https://doi.org/10.5194/gi-7-113-2018 2020-07-20T16:23:22Z Aurora is a very important geophysical phenomenon in the high latitudes of Arctic and Antarctic regions, and it is important to make a comparative study of the auroral morphology between the two hemispheres. Based on the morphological characteristics of the four labeled dayside discrete auroral types (auroral arc, drapery corona, radial corona and hot-spot aurora) on the 8001 dayside auroral images at the Chinese Arctic Yellow River Station in 2003, and by extracting the local binary pattern (LBP) features and using a k -nearest classifier, this paper performs an automatic classification of the 65 361 auroral images of the Chinese Arctic Yellow River Station during 2004–2009 and the 39 335 auroral images of the South Pole Station between 2003 and 2005. Finally, it obtains the occurrence distribution of the dayside auroral morphology in the Northern and Southern Hemisphere. The statistical results indicate that the four dayside discrete auroral types present a similar occurrence distribution between the two stations. To the best of our knowledge, we are the first to report statistical comparative results of dayside auroral morphology distribution between the Northern and Southern Hemisphere. Text Antarc* Antarctic Arctic South pole South pole Copernicus Publications: E-Journals Antarctic Arctic South Pole Geoscientific Instrumentation, Methods and Data Systems 7 1 113 122 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Aurora is a very important geophysical phenomenon in the high latitudes of Arctic and Antarctic regions, and it is important to make a comparative study of the auroral morphology between the two hemispheres. Based on the morphological characteristics of the four labeled dayside discrete auroral types (auroral arc, drapery corona, radial corona and hot-spot aurora) on the 8001 dayside auroral images at the Chinese Arctic Yellow River Station in 2003, and by extracting the local binary pattern (LBP) features and using a k -nearest classifier, this paper performs an automatic classification of the 65 361 auroral images of the Chinese Arctic Yellow River Station during 2004–2009 and the 39 335 auroral images of the South Pole Station between 2003 and 2005. Finally, it obtains the occurrence distribution of the dayside auroral morphology in the Northern and Southern Hemisphere. The statistical results indicate that the four dayside discrete auroral types present a similar occurrence distribution between the two stations. To the best of our knowledge, we are the first to report statistical comparative results of dayside auroral morphology distribution between the Northern and Southern Hemisphere. |
format |
Text |
author |
Yang, Qiuju Hu, Ze-Jun |
spellingShingle |
Yang, Qiuju Hu, Ze-Jun A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
author_facet |
Yang, Qiuju Hu, Ze-Jun |
author_sort |
Yang, Qiuju |
title |
A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
title_short |
A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
title_full |
A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
title_fullStr |
A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
title_full_unstemmed |
A comparative study of auroral morphology distribution between the Northern and Southern Hemisphere based on automatic classification |
title_sort |
comparative study of auroral morphology distribution between the northern and southern hemisphere based on automatic classification |
publishDate |
2019 |
url |
https://doi.org/10.5194/gi-7-113-2018 https://gi.copernicus.org/articles/7/113/2018/ |
geographic |
Antarctic Arctic South Pole |
geographic_facet |
Antarctic Arctic South Pole |
genre |
Antarc* Antarctic Arctic South pole South pole |
genre_facet |
Antarc* Antarctic Arctic South pole South pole |
op_source |
eISSN: 2193-0864 |
op_relation |
doi:10.5194/gi-7-113-2018 https://gi.copernicus.org/articles/7/113/2018/ |
op_doi |
https://doi.org/10.5194/gi-7-113-2018 |
container_title |
Geoscientific Instrumentation, Methods and Data Systems |
container_volume |
7 |
container_issue |
1 |
container_start_page |
113 |
op_container_end_page |
122 |
_version_ |
1766262135607787520 |