Geomagnetic storm and substorm aurora observed from Spitsbergen
ABSTRACT The present study confirms that the auroras of the nightside oval population consist of two main types, namely storm and substorm aurora. Storm-type aurora, which is relatively infrequent, results from bombardment of the upper ionosphere by fast particle streams generated in the solar wind...
Published in: | Polar Record |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1995
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0032247400027352 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400027352 |
id |
crcambridgeupr:10.1017/s0032247400027352 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0032247400027352 2024-03-03T08:48:09+00:00 Geomagnetic storm and substorm aurora observed from Spitsbergen Simmons, D.A.R. Sigernes, F. Henriksen, K. 1995 http://dx.doi.org/10.1017/s0032247400027352 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400027352 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 31, issue 179, page 375-388 ISSN 0032-2474 1475-3057 General Earth and Planetary Sciences Ecology Geography, Planning and Development journal-article 1995 crcambridgeupr https://doi.org/10.1017/s0032247400027352 2024-02-08T08:49:13Z ABSTRACT The present study confirms that the auroras of the nightside oval population consist of two main types, namely storm and substorm aurora. Storm-type aurora, which is relatively infrequent, results from bombardment of the upper ionosphere by fast particle streams generated in the solar wind by cataclysmic solar events related to coronal mass ejections. The associated turbulent plasma that is injected into the magnetosphere produces great magnetic storms of world-wide dimensions that may last for days. In contrast, substorm aurora is a frequent (almost daily) occurrence that lasts for an hour or two around geomagnetic midnight. It is generated by the impulsive release of stored magnetospheric energy from the substorm onset region in the Earth's magnetotail and is associated with localised negative magnetic bays in the H (horizontal)-component of the Earth's magnetic field in the vicinity of the auroral oval. Article in Journal/Newspaper Polar Record Spitsbergen Cambridge University Press Polar Record 31 179 375 388 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
spellingShingle |
General Earth and Planetary Sciences Ecology Geography, Planning and Development Simmons, D.A.R. Sigernes, F. Henriksen, K. Geomagnetic storm and substorm aurora observed from Spitsbergen |
topic_facet |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
description |
ABSTRACT The present study confirms that the auroras of the nightside oval population consist of two main types, namely storm and substorm aurora. Storm-type aurora, which is relatively infrequent, results from bombardment of the upper ionosphere by fast particle streams generated in the solar wind by cataclysmic solar events related to coronal mass ejections. The associated turbulent plasma that is injected into the magnetosphere produces great magnetic storms of world-wide dimensions that may last for days. In contrast, substorm aurora is a frequent (almost daily) occurrence that lasts for an hour or two around geomagnetic midnight. It is generated by the impulsive release of stored magnetospheric energy from the substorm onset region in the Earth's magnetotail and is associated with localised negative magnetic bays in the H (horizontal)-component of the Earth's magnetic field in the vicinity of the auroral oval. |
format |
Article in Journal/Newspaper |
author |
Simmons, D.A.R. Sigernes, F. Henriksen, K. |
author_facet |
Simmons, D.A.R. Sigernes, F. Henriksen, K. |
author_sort |
Simmons, D.A.R. |
title |
Geomagnetic storm and substorm aurora observed from Spitsbergen |
title_short |
Geomagnetic storm and substorm aurora observed from Spitsbergen |
title_full |
Geomagnetic storm and substorm aurora observed from Spitsbergen |
title_fullStr |
Geomagnetic storm and substorm aurora observed from Spitsbergen |
title_full_unstemmed |
Geomagnetic storm and substorm aurora observed from Spitsbergen |
title_sort |
geomagnetic storm and substorm aurora observed from spitsbergen |
publisher |
Cambridge University Press (CUP) |
publishDate |
1995 |
url |
http://dx.doi.org/10.1017/s0032247400027352 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400027352 |
genre |
Polar Record Spitsbergen |
genre_facet |
Polar Record Spitsbergen |
op_source |
Polar Record volume 31, issue 179, page 375-388 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247400027352 |
container_title |
Polar Record |
container_volume |
31 |
container_issue |
179 |
container_start_page |
375 |
op_container_end_page |
388 |
_version_ |
1792504674921742336 |