Ionospheric plasma structuring in relation to auroral particle precipitation
Auroral particle precipitation potentially plays the main role in ionospheric plasma structuring. The impact of auroral particle precipitation on plasma structuring is investigated using multi-point measurements from scintillation receivers and all-sky cameras from Longyearbyen, Ny-Ålesund, and Horn...
Published in: | Journal of Space Weather and Space Climate |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
EDP Sciences
2023
|
Subjects: | |
Online Access: | https://doi.org/10.1051/swsc/2022038 https://doaj.org/article/f62b44922df44283866d9e05809be1ea |
id |
ftdoajarticles:oai:doaj.org/article:f62b44922df44283866d9e05809be1ea |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f62b44922df44283866d9e05809be1ea 2023-05-15T16:34:57+02:00 Ionospheric plasma structuring in relation to auroral particle precipitation Enengl Florine Kotova Daria Jin Yaqi Clausen Lasse B.N. Miloch Wojciech J. 2023-01-01T00:00:00Z https://doi.org/10.1051/swsc/2022038 https://doaj.org/article/f62b44922df44283866d9e05809be1ea EN eng EDP Sciences https://www.swsc-journal.org/articles/swsc/full_html/2023/01/swsc220030/swsc220030.html https://doaj.org/toc/2115-7251 2115-7251 doi:10.1051/swsc/2022038 https://doaj.org/article/f62b44922df44283866d9e05809be1ea Journal of Space Weather and Space Climate, Vol 13, p 1 (2023) particle precipitation phase scintillation index auroral plasma structuring ionospheric e-region Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1051/swsc/2022038 2023-02-05T01:31:42Z Auroral particle precipitation potentially plays the main role in ionospheric plasma structuring. The impact of auroral particle precipitation on plasma structuring is investigated using multi-point measurements from scintillation receivers and all-sky cameras from Longyearbyen, Ny-Ålesund, and Hornsund on Svalbard. This provides us with the unique possibility of studying the spatial and temporal dynamics of the aurora. Here we consider three case studies to investigate how plasma structuring is related to different auroral forms. We demonstrate that plasma structuring impacting the GNSS signals is largest at the edges of auroral forms. Here we studied two stable arcs, two dynamic auroral bands, and a spiral. Specifically for arcs, we find elevated phase scintillation index values at the poleward edge of the aurora. This is observed for auroral oxygen emissions (557.7 nm) at 150 km in the ionospheric E-region. This altitude is also used as the ionospheric piercing point for the GNSS signals as the observations remain the same regardless of different satellite elevations and azimuths. Further, there may be a time delay between the temporal evolution of aurora (e.g., commencement and fading of auroral activity) and observations of elevated phase scintillation index values. The time delay could be explained by the intense influx of particles, which increases the plasma density and causes recombination to carry on longer, which may lead to a persistence of structures – a “memory effect”. High values of phase scintillation index values can be observed even shortly after strong visible aurora and can then remain significant at low intensities of the aurora. Article in Journal/Newspaper Hornsund Longyearbyen Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Longyearbyen Ny-Ålesund Svalbard Journal of Space Weather and Space Climate 13 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
particle precipitation phase scintillation index auroral plasma structuring ionospheric e-region Meteorology. Climatology QC851-999 |
spellingShingle |
particle precipitation phase scintillation index auroral plasma structuring ionospheric e-region Meteorology. Climatology QC851-999 Enengl Florine Kotova Daria Jin Yaqi Clausen Lasse B.N. Miloch Wojciech J. Ionospheric plasma structuring in relation to auroral particle precipitation |
topic_facet |
particle precipitation phase scintillation index auroral plasma structuring ionospheric e-region Meteorology. Climatology QC851-999 |
description |
Auroral particle precipitation potentially plays the main role in ionospheric plasma structuring. The impact of auroral particle precipitation on plasma structuring is investigated using multi-point measurements from scintillation receivers and all-sky cameras from Longyearbyen, Ny-Ålesund, and Hornsund on Svalbard. This provides us with the unique possibility of studying the spatial and temporal dynamics of the aurora. Here we consider three case studies to investigate how plasma structuring is related to different auroral forms. We demonstrate that plasma structuring impacting the GNSS signals is largest at the edges of auroral forms. Here we studied two stable arcs, two dynamic auroral bands, and a spiral. Specifically for arcs, we find elevated phase scintillation index values at the poleward edge of the aurora. This is observed for auroral oxygen emissions (557.7 nm) at 150 km in the ionospheric E-region. This altitude is also used as the ionospheric piercing point for the GNSS signals as the observations remain the same regardless of different satellite elevations and azimuths. Further, there may be a time delay between the temporal evolution of aurora (e.g., commencement and fading of auroral activity) and observations of elevated phase scintillation index values. The time delay could be explained by the intense influx of particles, which increases the plasma density and causes recombination to carry on longer, which may lead to a persistence of structures – a “memory effect”. High values of phase scintillation index values can be observed even shortly after strong visible aurora and can then remain significant at low intensities of the aurora. |
format |
Article in Journal/Newspaper |
author |
Enengl Florine Kotova Daria Jin Yaqi Clausen Lasse B.N. Miloch Wojciech J. |
author_facet |
Enengl Florine Kotova Daria Jin Yaqi Clausen Lasse B.N. Miloch Wojciech J. |
author_sort |
Enengl Florine |
title |
Ionospheric plasma structuring in relation to auroral particle precipitation |
title_short |
Ionospheric plasma structuring in relation to auroral particle precipitation |
title_full |
Ionospheric plasma structuring in relation to auroral particle precipitation |
title_fullStr |
Ionospheric plasma structuring in relation to auroral particle precipitation |
title_full_unstemmed |
Ionospheric plasma structuring in relation to auroral particle precipitation |
title_sort |
ionospheric plasma structuring in relation to auroral particle precipitation |
publisher |
EDP Sciences |
publishDate |
2023 |
url |
https://doi.org/10.1051/swsc/2022038 https://doaj.org/article/f62b44922df44283866d9e05809be1ea |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Hornsund Longyearbyen Ny-Ålesund Svalbard |
geographic_facet |
Hornsund Longyearbyen Ny-Ålesund Svalbard |
genre |
Hornsund Longyearbyen Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Hornsund Longyearbyen Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Journal of Space Weather and Space Climate, Vol 13, p 1 (2023) |
op_relation |
https://www.swsc-journal.org/articles/swsc/full_html/2023/01/swsc220030/swsc220030.html https://doaj.org/toc/2115-7251 2115-7251 doi:10.1051/swsc/2022038 https://doaj.org/article/f62b44922df44283866d9e05809be1ea |
op_doi |
https://doi.org/10.1051/swsc/2022038 |
container_title |
Journal of Space Weather and Space Climate |
container_volume |
13 |
container_start_page |
1 |
_version_ |
1766025057178484736 |