Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images
Abstract. Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps oer 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...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.566.4327 2023-05-15T16:04:41+02:00 Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images M. J. Kosch T. Hagfors K. Schlegel The Pennsylvania State University CiteSeerX Archives 1998 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.566.4327 http://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.566.4327 http://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf text 1998 ftciteseerx 2016-01-08T12:16:58Z Abstract. Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps oer 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 conduc-tance, 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) á Magnetospheric physics (auroral phenomena, instruments and techniques) 1 Text EISCAT Unknown Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) |
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English |
description |
Abstract. Ionospheric conductivity is not very easily measured directly. Incoherent scatter radars perhaps oer 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 conduc-tance, 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) á Magnetospheric physics (auroral phenomena, instruments and techniques) 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
M. J. Kosch T. Hagfors K. Schlegel |
spellingShingle |
M. J. Kosch T. Hagfors K. Schlegel Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images |
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 groundbased TV auroral images |
title_short |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images |
title_full |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images |
title_fullStr |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images |
title_full_unstemmed |
Extrapolating EISCAT Pedersen conductances to other parts of the sky using groundbased TV auroral images |
title_sort |
extrapolating eiscat pedersen conductances to other parts of the sky using groundbased tv auroral images |
publishDate |
1998 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.566.4327 http://www.ann-geophys.net/16/583/1998/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 |
http://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.566.4327 http://www.ann-geophys.net/16/583/1998/angeo-16-583-1998.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766400301097549824 |