Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann
Abstract. The SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region. The present study employs all-sky camera observations of the aurora from Husafell, Iceland, and the two Super-DA...
Main Authors: | , , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2000
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.5155 http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.592.5155 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.592.5155 2023-05-15T16:48:00+02:00 Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann S. E. Milan M. Lester N. Sato H. Takizawa J. -p. Villain The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.5155 http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.5155 http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf Key words Ionosphere (particle precipitation plasma text 2000 ftciteseerx 2016-01-08T13:35:30Z Abstract. The SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region. The present study employs all-sky camera observations of the aurora from Husafell, Iceland, and the two Super-DARN radars located on Iceland, ykkvibær and Stokkseyri, to determine the optical signature of such backscatter features. It is shown that, especially during quiet geomagnetic conditions, the backscatter region is closely associated with east-west aligned diuse auroral features, and that the two move in tandem with each other. This association between optical and radar aurora has repercussions for the instability mechanisms responsible for generating the E region irregularities from which radars scatter. This is discussed and compared with previous studies investigating the rela-tionship between optical and VHF radar aurora. In addition, although it is known that E region backscat-ter is commonly observed by SuperDARN radars, the present study demonstrates for the first time that multiple radars can observe the same feature to extend over at least 3 h of magnetic local time, allowing precipitation features to be mapped over large portions of the auroral zone. Text Iceland Unknown Husafell ENVELOPE(-20.893,-20.893,64.700,64.700) Stokkseyri ENVELOPE(-21.059,-21.059,63.838,63.838) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words Ionosphere (particle precipitation plasma |
spellingShingle |
Key words Ionosphere (particle precipitation plasma S. E. Milan M. Lester N. Sato H. Takizawa J. -p. Villain Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
topic_facet |
Key words Ionosphere (particle precipitation plasma |
description |
Abstract. The SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region. The present study employs all-sky camera observations of the aurora from Husafell, Iceland, and the two Super-DARN radars located on Iceland, ykkvibær and Stokkseyri, to determine the optical signature of such backscatter features. It is shown that, especially during quiet geomagnetic conditions, the backscatter region is closely associated with east-west aligned diuse auroral features, and that the two move in tandem with each other. This association between optical and radar aurora has repercussions for the instability mechanisms responsible for generating the E region irregularities from which radars scatter. This is discussed and compared with previous studies investigating the rela-tionship between optical and VHF radar aurora. In addition, although it is known that E region backscat-ter is commonly observed by SuperDARN radars, the present study demonstrates for the first time that multiple radars can observe the same feature to extend over at least 3 h of magnetic local time, allowing precipitation features to be mapped over large portions of the auroral zone. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
S. E. Milan M. Lester N. Sato H. Takizawa J. -p. Villain |
author_facet |
S. E. Milan M. Lester N. Sato H. Takizawa J. -p. Villain |
author_sort |
S. E. Milan |
title |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
title_short |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
title_full |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
title_fullStr |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
title_full_unstemmed |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter., Ann |
title_sort |
investigation of the relationship between optical auroral forms and hf radar e region backscatter., ann |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.5155 http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf |
long_lat |
ENVELOPE(-20.893,-20.893,64.700,64.700) ENVELOPE(-21.059,-21.059,63.838,63.838) |
geographic |
Husafell Stokkseyri |
geographic_facet |
Husafell Stokkseyri |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.592.5155 http://hal.archives-ouvertes.fr/docs/00/32/91/38/PDF/angeo-18-608-2000.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766038095846703104 |