Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation
Polar holes were observed in the high-latitude ionosphere during a series of multi-instrument case studies close to the Northern Hemisphere winter solstice in 2014 and 2015. These holes were observed during geomagnetically quiet conditions and under a range of solar activities using the European Inc...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2020
|
Subjects: | |
Online Access: | https://doi.org/10.5194/angeo-38-575-2020 https://doaj.org/article/c50b98a472da484ebdb888164689e705 |
id |
ftdoajarticles:oai:doaj.org/article:c50b98a472da484ebdb888164689e705 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:c50b98a472da484ebdb888164689e705 2023-05-15T16:04:40+02:00 Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation L. A. Jenner A. G. Wood G. D. Dorrian K. Oksavik T. K. Yeoman A. R. Fogg A. J. Coster 2020-04-01T00:00:00Z https://doi.org/10.5194/angeo-38-575-2020 https://doaj.org/article/c50b98a472da484ebdb888164689e705 EN eng Copernicus Publications https://www.ann-geophys.net/38/575/2020/angeo-38-575-2020.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-38-575-2020 0992-7689 1432-0576 https://doaj.org/article/c50b98a472da484ebdb888164689e705 Annales Geophysicae, Vol 38, Pp 575-590 (2020) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2020 ftdoajarticles https://doi.org/10.5194/angeo-38-575-2020 2022-12-31T03:35:01Z Polar holes were observed in the high-latitude ionosphere during a series of multi-instrument case studies close to the Northern Hemisphere winter solstice in 2014 and 2015. These holes were observed during geomagnetically quiet conditions and under a range of solar activities using the European Incoherent Scatter (EISCAT) Svalbard Radar (ESR) and measurements from Global Navigation Satellite System (GNSS) receivers. Steep electron density gradients have been associated with phase scintillation in previous studies; however, no enhanced scintillation was detected within the electron density gradients at these boundaries. It is suggested that the lack of phase scintillation may be due to low plasma density levels and a lack of intense particle precipitation. It is concluded that both significant electron density gradients and plasma density levels above a certain threshold are required for scintillation to occur. Article in Journal/Newspaper EISCAT Svalbard Directory of Open Access Journals: DOAJ Articles Svalbard Annales Geophysicae 38 2 575 590 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 L. A. Jenner A. G. Wood G. D. Dorrian K. Oksavik T. K. Yeoman A. R. Fogg A. J. Coster Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
Polar holes were observed in the high-latitude ionosphere during a series of multi-instrument case studies close to the Northern Hemisphere winter solstice in 2014 and 2015. These holes were observed during geomagnetically quiet conditions and under a range of solar activities using the European Incoherent Scatter (EISCAT) Svalbard Radar (ESR) and measurements from Global Navigation Satellite System (GNSS) receivers. Steep electron density gradients have been associated with phase scintillation in previous studies; however, no enhanced scintillation was detected within the electron density gradients at these boundaries. It is suggested that the lack of phase scintillation may be due to low plasma density levels and a lack of intense particle precipitation. It is concluded that both significant electron density gradients and plasma density levels above a certain threshold are required for scintillation to occur. |
format |
Article in Journal/Newspaper |
author |
L. A. Jenner A. G. Wood G. D. Dorrian K. Oksavik T. K. Yeoman A. R. Fogg A. J. Coster |
author_facet |
L. A. Jenner A. G. Wood G. D. Dorrian K. Oksavik T. K. Yeoman A. R. Fogg A. J. Coster |
author_sort |
L. A. Jenner |
title |
Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
title_short |
Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
title_full |
Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
title_fullStr |
Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
title_full_unstemmed |
Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
title_sort |
plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/angeo-38-575-2020 https://doaj.org/article/c50b98a472da484ebdb888164689e705 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
Annales Geophysicae, Vol 38, Pp 575-590 (2020) |
op_relation |
https://www.ann-geophys.net/38/575/2020/angeo-38-575-2020.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-38-575-2020 0992-7689 1432-0576 https://doaj.org/article/c50b98a472da484ebdb888164689e705 |
op_doi |
https://doi.org/10.5194/angeo-38-575-2020 |
container_title |
Annales Geophysicae |
container_volume |
38 |
container_issue |
2 |
container_start_page |
575 |
op_container_end_page |
590 |
_version_ |
1766400274554945536 |