The response of the azimuthal component of the ionospheric electric field to auroral arc brightening
International audience We have analyzed the response of azimuthal component of the ionospheric electric field to auroral arc activity. We have chosen for analysis three intervals of coordinated EISCAT and TV observations on 18 February, 1993. These intervals include three kinds of arc activity: the...
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ftinsu:oai:HAL:hal-00316542v1 2023-11-12T04:16:36+01:00 The response of the azimuthal component of the ionospheric electric field to auroral arc brightening Safargaleev, V. Lyatsky, W. Gazey, N. G. Smith, P. N. Kriviliov, V. Polar Geophysical Institute of Russian Academy of Sciences (PGI) Russian Academy of Sciences Moscow (RAS) EISCAT Group STFC Rutherford Appleton Laboratory (RAL) Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC) Space Physics Group University of Sussex 2000 https://hal.science/hal-00316542 https://hal.science/hal-00316542/document https://hal.science/hal-00316542/file/angeo-18-65-2000.pdf en eng HAL CCSD European Geosciences Union hal-00316542 https://hal.science/hal-00316542 https://hal.science/hal-00316542/document https://hal.science/hal-00316542/file/angeo-18-65-2000.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316542 Annales Geophysicae, 2000, 18 (1), pp.65-73 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2000 ftinsu 2023-10-25T16:25:34Z International audience We have analyzed the response of azimuthal component of the ionospheric electric field to auroral arc activity. We have chosen for analysis three intervals of coordinated EISCAT and TV observations on 18 February, 1993. These intervals include three kinds of arc activity: the appearance of a new auroral arc, the gradual brightening of the existing arc and variations of the arc luminosity. The arcs were mostly east-west aligned. In all cases, the enhancement of arc luminosity is accompanied by a decrease in the westward component of the ionospheric electric field. In contrast, an increase of that component seems to be connected with arc fading. The observed response is assumed to have the same nature as the "short circuit" of an external electric field by the conductor. The possible consequence of this phenomenon is discussed. Keywords. Ionosphere (electric fields and currents; ionospheric irregularities) · Magnetospheric physics (auroral phenomena) Article in Journal/Newspaper EISCAT Institut national des sciences de l'Univers: HAL-INSU |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Safargaleev, V. Lyatsky, W. Gazey, N. G. Smith, P. N. Kriviliov, V. The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We have analyzed the response of azimuthal component of the ionospheric electric field to auroral arc activity. We have chosen for analysis three intervals of coordinated EISCAT and TV observations on 18 February, 1993. These intervals include three kinds of arc activity: the appearance of a new auroral arc, the gradual brightening of the existing arc and variations of the arc luminosity. The arcs were mostly east-west aligned. In all cases, the enhancement of arc luminosity is accompanied by a decrease in the westward component of the ionospheric electric field. In contrast, an increase of that component seems to be connected with arc fading. The observed response is assumed to have the same nature as the "short circuit" of an external electric field by the conductor. The possible consequence of this phenomenon is discussed. Keywords. Ionosphere (electric fields and currents; ionospheric irregularities) · Magnetospheric physics (auroral phenomena) |
author2 |
Polar Geophysical Institute of Russian Academy of Sciences (PGI) Russian Academy of Sciences Moscow (RAS) EISCAT Group STFC Rutherford Appleton Laboratory (RAL) Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC) Space Physics Group University of Sussex |
format |
Article in Journal/Newspaper |
author |
Safargaleev, V. Lyatsky, W. Gazey, N. G. Smith, P. N. Kriviliov, V. |
author_facet |
Safargaleev, V. Lyatsky, W. Gazey, N. G. Smith, P. N. Kriviliov, V. |
author_sort |
Safargaleev, V. |
title |
The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
title_short |
The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
title_full |
The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
title_fullStr |
The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
title_full_unstemmed |
The response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
title_sort |
response of the azimuthal component of the ionospheric electric field to auroral arc brightening |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.science/hal-00316542 https://hal.science/hal-00316542/document https://hal.science/hal-00316542/file/angeo-18-65-2000.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316542 Annales Geophysicae, 2000, 18 (1), pp.65-73 |
op_relation |
hal-00316542 https://hal.science/hal-00316542 https://hal.science/hal-00316542/document https://hal.science/hal-00316542/file/angeo-18-65-2000.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782333682706546688 |