A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar
The Super Dual Auroral Radar Network (SuperDARN) is a chain of HF radars that monitor plasma dynamics in the ionosphere. In recent years, SuperDARN has expanded to midlatitudes in order to provide enhanced coverage during geomagnetically active periods. A new type of backscatter from F region plasma...
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ftleicesterunfig:oai:figshare.com:article/10172549 2023-05-15T16:04:45+02:00 A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar A. J. Ribeiro J. M. Ruohoniemi J. B. H. Baker L. B. N. Clausen R. A. Greenwald Mark Lester 2012-02-21T00:00:00Z https://figshare.com/articles/journal_contribution/A_survey_of_plasma_irregularities_as_seen_by_the_midlatitude_Blackstone_SuperDARN_radar/10172549 unknown 2381/28733 https://figshare.com/articles/journal_contribution/A_survey_of_plasma_irregularities_as_seen_by_the_midlatitude_Blackstone_SuperDARN_radar/10172549 All Rights Reserved Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY SMALL-SCALE IRREGULARITIES CUTLASS FINLAND RADAR LATITUDE F-REGION EISCAT UHF SYSTEM HF RADAR SPREAD F IONOSPHERIC IRREGULARITIES ELECTRIC-FIELDS DRIFT ELECTRODYNAMICS Text Journal contribution 2012 ftleicesterunfig 2021-11-11T20:01:12Z The Super Dual Auroral Radar Network (SuperDARN) is a chain of HF radars that monitor plasma dynamics in the ionosphere. In recent years, SuperDARN has expanded to midlatitudes in order to provide enhanced coverage during geomagnetically active periods. A new type of backscatter from F region plasma irregularities with low Doppler velocity has been frequently observed on the nightside during quiescent conditions. Using three years of data from the Blackstone, VA radar, we have implemented a method for extracting this new type of backscatter from routine observations. We have statistically characterized the occurrence properties of the Sub Auroral Ionospheric Scatter (SAIS) events, including the latitudinal relationships to the equatorward edge of the auroral oval and the ionospheric projection of the plasmapause. We find that the backscatter is confined to local night, occurs on ≈70% of nights, is fixed in geomagnetic latitude, and is equatorward of both the auroral region and the plasmapause boundary. We conclude that SAIS irregularities are observed within a range of latitudes that is conjugate to the inner magnetosphere (plasmasphere). Other Non-Article Part of Journal/Newspaper EISCAT University of Leicester: Figshare |
institution |
Open Polar |
collection |
University of Leicester: Figshare |
op_collection_id |
ftleicesterunfig |
language |
unknown |
topic |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY SMALL-SCALE IRREGULARITIES CUTLASS FINLAND RADAR LATITUDE F-REGION EISCAT UHF SYSTEM HF RADAR SPREAD F IONOSPHERIC IRREGULARITIES ELECTRIC-FIELDS DRIFT ELECTRODYNAMICS |
spellingShingle |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY SMALL-SCALE IRREGULARITIES CUTLASS FINLAND RADAR LATITUDE F-REGION EISCAT UHF SYSTEM HF RADAR SPREAD F IONOSPHERIC IRREGULARITIES ELECTRIC-FIELDS DRIFT ELECTRODYNAMICS A. J. Ribeiro J. M. Ruohoniemi J. B. H. Baker L. B. N. Clausen R. A. Greenwald Mark Lester A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
topic_facet |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY SMALL-SCALE IRREGULARITIES CUTLASS FINLAND RADAR LATITUDE F-REGION EISCAT UHF SYSTEM HF RADAR SPREAD F IONOSPHERIC IRREGULARITIES ELECTRIC-FIELDS DRIFT ELECTRODYNAMICS |
description |
The Super Dual Auroral Radar Network (SuperDARN) is a chain of HF radars that monitor plasma dynamics in the ionosphere. In recent years, SuperDARN has expanded to midlatitudes in order to provide enhanced coverage during geomagnetically active periods. A new type of backscatter from F region plasma irregularities with low Doppler velocity has been frequently observed on the nightside during quiescent conditions. Using three years of data from the Blackstone, VA radar, we have implemented a method for extracting this new type of backscatter from routine observations. We have statistically characterized the occurrence properties of the Sub Auroral Ionospheric Scatter (SAIS) events, including the latitudinal relationships to the equatorward edge of the auroral oval and the ionospheric projection of the plasmapause. We find that the backscatter is confined to local night, occurs on ≈70% of nights, is fixed in geomagnetic latitude, and is equatorward of both the auroral region and the plasmapause boundary. We conclude that SAIS irregularities are observed within a range of latitudes that is conjugate to the inner magnetosphere (plasmasphere). |
format |
Other Non-Article Part of Journal/Newspaper |
author |
A. J. Ribeiro J. M. Ruohoniemi J. B. H. Baker L. B. N. Clausen R. A. Greenwald Mark Lester |
author_facet |
A. J. Ribeiro J. M. Ruohoniemi J. B. H. Baker L. B. N. Clausen R. A. Greenwald Mark Lester |
author_sort |
A. J. Ribeiro |
title |
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
title_short |
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
title_full |
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
title_fullStr |
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
title_full_unstemmed |
A survey of plasma irregularities as seen by the midlatitude Blackstone SuperDARN radar |
title_sort |
survey of plasma irregularities as seen by the midlatitude blackstone superdarn radar |
publishDate |
2012 |
url |
https://figshare.com/articles/journal_contribution/A_survey_of_plasma_irregularities_as_seen_by_the_midlatitude_Blackstone_SuperDARN_radar/10172549 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
2381/28733 https://figshare.com/articles/journal_contribution/A_survey_of_plasma_irregularities_as_seen_by_the_midlatitude_Blackstone_SuperDARN_radar/10172549 |
op_rights |
All Rights Reserved |
_version_ |
1766400379675738112 |