Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images
International audience Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps offer the best method but can only measure at one point in the sky at any one time and are limited in their time resolution. Statistical models of average conductivity are availabl...
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Online Access: | https://hal.science/hal-00316393 https://hal.science/hal-00316393/document https://hal.science/hal-00316393/file/angeo-16-583-1998.pdf |
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ftccsdartic:oai:HAL:hal-00316393v1 2023-11-12T04:16:36+01:00 Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images Kosch, M. J. Hagfors, T. Schlegel, K. Max-Planck-Institut für Aeronomie (MPI Aeronomie) Max-Planck-Gesellschaft 1998 https://hal.science/hal-00316393 https://hal.science/hal-00316393/document https://hal.science/hal-00316393/file/angeo-16-583-1998.pdf en eng HAL CCSD European Geosciences Union hal-00316393 https://hal.science/hal-00316393 https://hal.science/hal-00316393/document https://hal.science/hal-00316393/file/angeo-16-583-1998.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316393 Annales Geophysicae, 1998, 16 (5), pp.583-588 [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 1998 ftccsdartic 2023-10-21T23:08:33Z International audience Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps offer the best method but can only measure at one point in the sky at any one time and are limited in their time resolution. Statistical models of average conductivity are available but these may not be applied to individual case studies such as substorms. There are many instances where a real-time estimate of ionospheric conductivity over a large field-of-view is highly desirable at a high temporal and spatial resolution. We show that it is possible to make a reasonable estimate of the noctural height-integrated Pedersen conductivity, or conductance, with a single all-sky TV camera operating at 557.7 nm. This is not so in the case of the Hall conductance where at least two auroral wavelengths should be imaged in order to estimate additionally the energy of the precipitating particles. Article in Journal/Newspaper EISCAT Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
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 Kosch, M. J. Hagfors, T. Schlegel, K. Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps offer the best method but can only measure at one point in the sky at any one time and are limited in their time resolution. Statistical models of average conductivity are available but these may not be applied to individual case studies such as substorms. There are many instances where a real-time estimate of ionospheric conductivity over a large field-of-view is highly desirable at a high temporal and spatial resolution. We show that it is possible to make a reasonable estimate of the noctural height-integrated Pedersen conductivity, or conductance, with a single all-sky TV camera operating at 557.7 nm. This is not so in the case of the Hall conductance where at least two auroral wavelengths should be imaged in order to estimate additionally the energy of the precipitating particles. |
author2 |
Max-Planck-Institut für Aeronomie (MPI Aeronomie) Max-Planck-Gesellschaft |
format |
Article in Journal/Newspaper |
author |
Kosch, M. J. Hagfors, T. Schlegel, K. |
author_facet |
Kosch, M. J. Hagfors, T. Schlegel, K. |
author_sort |
Kosch, M. J. |
title |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
title_short |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
title_full |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
title_fullStr |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
title_full_unstemmed |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
title_sort |
extrapolating eiscat pedersen conductances to other parts of the sky using ground-based tv auroral images |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.science/hal-00316393 https://hal.science/hal-00316393/document https://hal.science/hal-00316393/file/angeo-16-583-1998.pdf |
long_lat |
ENVELOPE(140.013,140.013,-66.668,-66.668) |
geographic |
Pedersen |
geographic_facet |
Pedersen |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316393 Annales Geophysicae, 1998, 16 (5), pp.583-588 |
op_relation |
hal-00316393 https://hal.science/hal-00316393 https://hal.science/hal-00316393/document https://hal.science/hal-00316393/file/angeo-16-583-1998.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782333682501025792 |