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...
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ftleicesterunfig:oai:figshare.com:article/12311465 2023-05-15T16:04:40+02:00 Plasma density gradients at the edge of polar ionospheric holes: The absence of phase scintillation LA Jenner AG Wood GD Dorrian K Oksavik TK Yeoman AR Fogg AJ Coster 2020-04-24T00:00:00Z https://figshare.com/articles/journal_contribution/Plasma_density_gradients_at_the_edge_of_polar_ionospheric_holes_The_absence_of_phase_scintillation/12311465 unknown 2381/12311465.v1 https://figshare.com/articles/journal_contribution/Plasma_density_gradients_at_the_edge_of_polar_ionospheric_holes_The_absence_of_phase_scintillation/12311465 CC BY 4.0 CC-BY Uncategorized Uncategorised value Text Journal contribution 2020 ftleicesterunfig 2021-11-11T19:17:54Z 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. Other Non-Article Part of Journal/Newspaper EISCAT Svalbard University of Leicester: Figshare Svalbard |
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University of Leicester: Figshare |
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ftleicesterunfig |
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unknown |
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Uncategorized Uncategorised value |
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Uncategorized Uncategorised value LA Jenner AG Wood GD Dorrian K Oksavik TK Yeoman AR Fogg AJ Coster Plasma density gradients at the edge of polar ionospheric holes: The absence of phase scintillation |
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Uncategorized Uncategorised value |
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 |
Other Non-Article Part of Journal/Newspaper |
author |
LA Jenner AG Wood GD Dorrian K Oksavik TK Yeoman AR Fogg AJ Coster |
author_facet |
LA Jenner AG Wood GD Dorrian K Oksavik TK Yeoman AR Fogg AJ Coster |
author_sort |
LA 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 |
publishDate |
2020 |
url |
https://figshare.com/articles/journal_contribution/Plasma_density_gradients_at_the_edge_of_polar_ionospheric_holes_The_absence_of_phase_scintillation/12311465 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_relation |
2381/12311465.v1 https://figshare.com/articles/journal_contribution/Plasma_density_gradients_at_the_edge_of_polar_ionospheric_holes_The_absence_of_phase_scintillation/12311465 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
_version_ |
1766400276696137728 |