Relationship between Na layer and CNA variations observed at Syowa, Antarctic
Abstract We have performed a statistical data analysis on relationship between simultaneous Na density data and cosmic noise absorption (CNA) data, which is an indicator for energetic particle precipitation, obtained at Syowa, Antarctic in 2000–2002. It is found that the Na densities around the tops...
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crspringernat:10.1186/s40623-020-01335-7 2023-05-15T14:09:11+02:00 Relationship between Na layer and CNA variations observed at Syowa, Antarctic Tsuda, T. T. Tanaka, Y. -M. Tozu, R. Takizawa, K. Ejiri, M. K. Nishiyama, T. Kawahara, T. D. Nakamura, T. Japan Society for the Promotion of Science Inamori Foundation JGC-S Scholarship Foundation Research Grants from Casio Science Promotion Foundation 2021 http://dx.doi.org/10.1186/s40623-020-01335-7 http://link.springer.com/content/pdf/10.1186/s40623-020-01335-7.pdf http://link.springer.com/article/10.1186/s40623-020-01335-7/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Earth, Planets and Space volume 73, issue 1 ISSN 1880-5981 Space and Planetary Science Geology journal-article 2021 crspringernat https://doi.org/10.1186/s40623-020-01335-7 2022-01-04T14:59:58Z Abstract We have performed a statistical data analysis on relationship between simultaneous Na density data and cosmic noise absorption (CNA) data, which is an indicator for energetic particle precipitation, obtained at Syowa, Antarctic in 2000–2002. It is found that the Na densities around the topside of Na layers (above $$\sim 95 \,\hbox {km}$$ ∼ 95 km height) tended to be smaller when the CNA was larger. The amounts of Na density responses, i.e., Na density decrease or Na loss, were increasing with magnetic local time (MLT) from dusk hours to dawn hours, and those of CNA responses, i.e., CNA increase, were also increasing with MLT. Thus, there were clear negative correlations between the Na density and CNA variations. These results indicate that the Na loss around the topside of Na layer would be induced by the energetic particle precipitation, and its effect would be more severe in dawn hours. Article in Journal/Newspaper Antarc* Antarctic Springer Nature (via Crossref) Antarctic Earth, Planets and Space 73 1 |
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Springer Nature (via Crossref) |
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English |
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Space and Planetary Science Geology |
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Space and Planetary Science Geology Tsuda, T. T. Tanaka, Y. -M. Tozu, R. Takizawa, K. Ejiri, M. K. Nishiyama, T. Kawahara, T. D. Nakamura, T. Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
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Space and Planetary Science Geology |
description |
Abstract We have performed a statistical data analysis on relationship between simultaneous Na density data and cosmic noise absorption (CNA) data, which is an indicator for energetic particle precipitation, obtained at Syowa, Antarctic in 2000–2002. It is found that the Na densities around the topside of Na layers (above $$\sim 95 \,\hbox {km}$$ ∼ 95 km height) tended to be smaller when the CNA was larger. The amounts of Na density responses, i.e., Na density decrease or Na loss, were increasing with magnetic local time (MLT) from dusk hours to dawn hours, and those of CNA responses, i.e., CNA increase, were also increasing with MLT. Thus, there were clear negative correlations between the Na density and CNA variations. These results indicate that the Na loss around the topside of Na layer would be induced by the energetic particle precipitation, and its effect would be more severe in dawn hours. |
author2 |
Japan Society for the Promotion of Science Inamori Foundation JGC-S Scholarship Foundation Research Grants from Casio Science Promotion Foundation |
format |
Article in Journal/Newspaper |
author |
Tsuda, T. T. Tanaka, Y. -M. Tozu, R. Takizawa, K. Ejiri, M. K. Nishiyama, T. Kawahara, T. D. Nakamura, T. |
author_facet |
Tsuda, T. T. Tanaka, Y. -M. Tozu, R. Takizawa, K. Ejiri, M. K. Nishiyama, T. Kawahara, T. D. Nakamura, T. |
author_sort |
Tsuda, T. T. |
title |
Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
title_short |
Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
title_full |
Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
title_fullStr |
Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
title_full_unstemmed |
Relationship between Na layer and CNA variations observed at Syowa, Antarctic |
title_sort |
relationship between na layer and cna variations observed at syowa, antarctic |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1186/s40623-020-01335-7 http://link.springer.com/content/pdf/10.1186/s40623-020-01335-7.pdf http://link.springer.com/article/10.1186/s40623-020-01335-7/fulltext.html |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Earth, Planets and Space volume 73, issue 1 ISSN 1880-5981 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1186/s40623-020-01335-7 |
container_title |
Earth, Planets and Space |
container_volume |
73 |
container_issue |
1 |
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1766281183827591168 |