Variability of dayside high latitude convection associated with a sequence of auroral transients
10 second resolution ionospheric convection data covering the invariant latitude range from 71° to 76°, obtained by using the EISCAT UHF and VHF radars, are combined with optical data from Ny Ålesund during a sequence of auroral transients in the post-noon sector (∼ 15 MLT). Satellite observations o...
Published in: | Journal of Atmospheric and Terrestrial Physics |
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Online Access: | https://centaur.reading.ac.uk/38795/ https://doi.org/10.1016/0021-9169(95)00021-6 |
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ftunivreading:oai:centaur.reading.ac.uk:38795 2024-05-19T07:39:39+00:00 Variability of dayside high latitude convection associated with a sequence of auroral transients Moen, J. Lockwood, Mike Sandholt, P.E. Løvhaug, U.P. Denig, W.F. van Eyken, A.P. Egeland, A. 1996 https://centaur.reading.ac.uk/38795/ https://doi.org/10.1016/0021-9169(95)00021-6 unknown Moen, J., Lockwood, M. <https://centaur.reading.ac.uk/view/creators/90001127.html> orcid:0000-0002-7397-2172 , Sandholt, P.E., Løvhaug, U.P., Denig, W.F., van Eyken, A.P. and Egeland, A. (1996) Variability of dayside high latitude convection associated with a sequence of auroral transients. Journal of Atmospheric and Terrestrial Physics, 58 (1-4). pp. 85-96. ISSN 00219169 doi: https://doi.org/10.1016/0021-9169(95)00021-6 <https://doi.org/10.1016/0021-9169(95)00021-6> Article PeerReviewed 1996 ftunivreading https://doi.org/10.1016/0021-9169(95)00021-6 2024-04-24T00:11:11Z 10 second resolution ionospheric convection data covering the invariant latitude range from 71° to 76°, obtained by using the EISCAT UHF and VHF radars, are combined with optical data from Ny Ålesund during a sequence of auroral transients in the post-noon sector (∼ 15 MLT). Satellite observations of polar cap convection patterns suggest negative BZ and BY components of the interplanetary magnetic field. Burst-like enhancements of westward (sunward) post-noon convection were accompanied by eastward moving auroral forms at higher latitudes, above the convection reversal boundary. In this case the background convection was weak, whereas the integrated potential drop across the radar field-of-view associated with the westward flow bursts was typically ∼ 20-35 kV. The auroral phenomenon consists of a series of similar events with a mean repetition period of 8 min. A close correlation between the auroral activity and convection enhancements in the cleft ionosphere is demonstrated. Article in Journal/Newspaper EISCAT Ny Ålesund Ny-Ålesund CentAUR: Central Archive at the University of Reading Journal of Atmospheric and Terrestrial Physics 58 1-4 85 96 |
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Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
unknown |
description |
10 second resolution ionospheric convection data covering the invariant latitude range from 71° to 76°, obtained by using the EISCAT UHF and VHF radars, are combined with optical data from Ny Ålesund during a sequence of auroral transients in the post-noon sector (∼ 15 MLT). Satellite observations of polar cap convection patterns suggest negative BZ and BY components of the interplanetary magnetic field. Burst-like enhancements of westward (sunward) post-noon convection were accompanied by eastward moving auroral forms at higher latitudes, above the convection reversal boundary. In this case the background convection was weak, whereas the integrated potential drop across the radar field-of-view associated with the westward flow bursts was typically ∼ 20-35 kV. The auroral phenomenon consists of a series of similar events with a mean repetition period of 8 min. A close correlation between the auroral activity and convection enhancements in the cleft ionosphere is demonstrated. |
format |
Article in Journal/Newspaper |
author |
Moen, J. Lockwood, Mike Sandholt, P.E. Løvhaug, U.P. Denig, W.F. van Eyken, A.P. Egeland, A. |
spellingShingle |
Moen, J. Lockwood, Mike Sandholt, P.E. Løvhaug, U.P. Denig, W.F. van Eyken, A.P. Egeland, A. Variability of dayside high latitude convection associated with a sequence of auroral transients |
author_facet |
Moen, J. Lockwood, Mike Sandholt, P.E. Løvhaug, U.P. Denig, W.F. van Eyken, A.P. Egeland, A. |
author_sort |
Moen, J. |
title |
Variability of dayside high latitude convection associated with a sequence of auroral transients |
title_short |
Variability of dayside high latitude convection associated with a sequence of auroral transients |
title_full |
Variability of dayside high latitude convection associated with a sequence of auroral transients |
title_fullStr |
Variability of dayside high latitude convection associated with a sequence of auroral transients |
title_full_unstemmed |
Variability of dayside high latitude convection associated with a sequence of auroral transients |
title_sort |
variability of dayside high latitude convection associated with a sequence of auroral transients |
publishDate |
1996 |
url |
https://centaur.reading.ac.uk/38795/ https://doi.org/10.1016/0021-9169(95)00021-6 |
genre |
EISCAT Ny Ålesund Ny-Ålesund |
genre_facet |
EISCAT Ny Ålesund Ny-Ålesund |
op_relation |
Moen, J., Lockwood, M. <https://centaur.reading.ac.uk/view/creators/90001127.html> orcid:0000-0002-7397-2172 , Sandholt, P.E., Løvhaug, U.P., Denig, W.F., van Eyken, A.P. and Egeland, A. (1996) Variability of dayside high latitude convection associated with a sequence of auroral transients. Journal of Atmospheric and Terrestrial Physics, 58 (1-4). pp. 85-96. ISSN 00219169 doi: https://doi.org/10.1016/0021-9169(95)00021-6 <https://doi.org/10.1016/0021-9169(95)00021-6> |
op_doi |
https://doi.org/10.1016/0021-9169(95)00021-6 |
container_title |
Journal of Atmospheric and Terrestrial Physics |
container_volume |
58 |
container_issue |
1-4 |
container_start_page |
85 |
op_container_end_page |
96 |
_version_ |
1799479223423860736 |