Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images
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...
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Copernicus Publications
1998
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ftdoajarticles:oai:doaj.org/article:ff3156e1325a4dbcba696c08113e8062 2023-05-15T16:04:43+02:00 Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images M. J. Kosch T. Hagfors K. Schlegel 1998-05-01T00:00:00Z https://doi.org/10.1007/s00585-998-0583-y https://doaj.org/article/ff3156e1325a4dbcba696c08113e8062 EN eng Copernicus Publications https://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-998-0583-y 0992-7689 1432-0576 https://doaj.org/article/ff3156e1325a4dbcba696c08113e8062 Annales Geophysicae, Vol 16, Pp 583-588 (1998) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1998 ftdoajarticles https://doi.org/10.1007/s00585-998-0583-y 2022-12-31T04:43:36Z 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. Key words. Atmospheric composition and structure (airglow and aurora) · Magnetospheric physics (auroral phenomena · instruments and techniques) Article in Journal/Newspaper EISCAT Directory of Open Access Journals: DOAJ Articles Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) Annales Geophysicae 16 5 583 588 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 M. J. Kosch T. Hagfors K. Schlegel Extrapolating EISCAT Pedersen conductances to other parts of the sky using ground-based TV auroral images |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
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. Key words. Atmospheric composition and structure (airglow and aurora) · Magnetospheric physics (auroral phenomena · instruments and techniques) |
format |
Article in Journal/Newspaper |
author |
M. J. Kosch T. Hagfors K. Schlegel |
author_facet |
M. J. Kosch T. Hagfors K. Schlegel |
author_sort |
M. J. Kosch |
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 |
Copernicus Publications |
publishDate |
1998 |
url |
https://doi.org/10.1007/s00585-998-0583-y https://doaj.org/article/ff3156e1325a4dbcba696c08113e8062 |
long_lat |
ENVELOPE(140.013,140.013,-66.668,-66.668) |
geographic |
Pedersen |
geographic_facet |
Pedersen |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
Annales Geophysicae, Vol 16, Pp 583-588 (1998) |
op_relation |
https://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-998-0583-y 0992-7689 1432-0576 https://doaj.org/article/ff3156e1325a4dbcba696c08113e8062 |
op_doi |
https://doi.org/10.1007/s00585-998-0583-y |
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Annales Geophysicae |
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16 |
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5 |
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