Variability of dayside convection and motions of the cusp/cleft aurora
We present measurements of the ionospheric plasma flow over the range of invariant latitudes 71–76°, observed at 10-second resolution using both the EISCAT radars, with simultaneous observations of the 630 nm cusp/cleft aurora made by a meridian-scanning photometer at Ny Ålesund, Svalbard. A major i...
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1993
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Online Access: | https://centaur.reading.ac.uk/38823/ https://centaur.reading.ac.uk/38823/1/105_Lockwoodetal93_93GL00846.pdf https://doi.org/10.1029/93GL00846 |
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ftunivreading:oai:centaur.reading.ac.uk:38823 2024-09-15T18:04:29+00:00 Variability of dayside convection and motions of the cusp/cleft aurora Lockwood, Mike Moen, J. Cowley, S. W. H. Farmer, A. D. Løvhaug, U. P. Lühr, H. Davda, V. N. 1993 text https://centaur.reading.ac.uk/38823/ https://centaur.reading.ac.uk/38823/1/105_Lockwoodetal93_93GL00846.pdf https://doi.org/10.1029/93GL00846 en eng https://centaur.reading.ac.uk/38823/1/105_Lockwoodetal93_93GL00846.pdf Lockwood, M. <https://centaur.reading.ac.uk/view/creators/90001127.html> orcid:0000-0002-7397-2172 , Moen, J., Cowley, S. W. H., Farmer, A. D., Løvhaug, U. P., Lühr, H. and Davda, V. N. (1993) Variability of dayside convection and motions of the cusp/cleft aurora. Geophysical Research Letters, 20 (11). pp. 1011-1014. ISSN 00948276 doi: https://doi.org/10.1029/93GL00846 <https://doi.org/10.1029/93GL00846> Article PeerReviewed 1993 ftunivreading https://doi.org/10.1029/93GL00846 2024-06-25T14:57:10Z We present measurements of the ionospheric plasma flow over the range of invariant latitudes 71–76°, observed at 10-second resolution using both the EISCAT radars, with simultaneous observations of the 630 nm cusp/cleft aurora made by a meridian-scanning photometer at Ny Ålesund, Svalbard. A major increase in the trans-auroral voltage from 5 to 40 kV (associated with sunward convection in the early afternoon sector) is found to follow a southward motion of the aurora and coincide with the onset of regular transient auroral breakup events. It is shown that these observations are consistent with recent theoretical work on how ionospheric flows are excited by time-dependent reconnection at the dayside magnetopause. Article in Journal/Newspaper EISCAT Ny Ålesund Ny-Ålesund Svalbard CentAUR: Central Archive at the University of Reading Geophysical Research Letters 20 11 1011 1014 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
We present measurements of the ionospheric plasma flow over the range of invariant latitudes 71–76°, observed at 10-second resolution using both the EISCAT radars, with simultaneous observations of the 630 nm cusp/cleft aurora made by a meridian-scanning photometer at Ny Ålesund, Svalbard. A major increase in the trans-auroral voltage from 5 to 40 kV (associated with sunward convection in the early afternoon sector) is found to follow a southward motion of the aurora and coincide with the onset of regular transient auroral breakup events. It is shown that these observations are consistent with recent theoretical work on how ionospheric flows are excited by time-dependent reconnection at the dayside magnetopause. |
format |
Article in Journal/Newspaper |
author |
Lockwood, Mike Moen, J. Cowley, S. W. H. Farmer, A. D. Løvhaug, U. P. Lühr, H. Davda, V. N. |
spellingShingle |
Lockwood, Mike Moen, J. Cowley, S. W. H. Farmer, A. D. Løvhaug, U. P. Lühr, H. Davda, V. N. Variability of dayside convection and motions of the cusp/cleft aurora |
author_facet |
Lockwood, Mike Moen, J. Cowley, S. W. H. Farmer, A. D. Løvhaug, U. P. Lühr, H. Davda, V. N. |
author_sort |
Lockwood, Mike |
title |
Variability of dayside convection and motions of the cusp/cleft aurora |
title_short |
Variability of dayside convection and motions of the cusp/cleft aurora |
title_full |
Variability of dayside convection and motions of the cusp/cleft aurora |
title_fullStr |
Variability of dayside convection and motions of the cusp/cleft aurora |
title_full_unstemmed |
Variability of dayside convection and motions of the cusp/cleft aurora |
title_sort |
variability of dayside convection and motions of the cusp/cleft aurora |
publishDate |
1993 |
url |
https://centaur.reading.ac.uk/38823/ https://centaur.reading.ac.uk/38823/1/105_Lockwoodetal93_93GL00846.pdf https://doi.org/10.1029/93GL00846 |
genre |
EISCAT Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
EISCAT Ny Ålesund Ny-Ålesund Svalbard |
op_relation |
https://centaur.reading.ac.uk/38823/1/105_Lockwoodetal93_93GL00846.pdf Lockwood, M. <https://centaur.reading.ac.uk/view/creators/90001127.html> orcid:0000-0002-7397-2172 , Moen, J., Cowley, S. W. H., Farmer, A. D., Løvhaug, U. P., Lühr, H. and Davda, V. N. (1993) Variability of dayside convection and motions of the cusp/cleft aurora. Geophysical Research Letters, 20 (11). pp. 1011-1014. ISSN 00948276 doi: https://doi.org/10.1029/93GL00846 <https://doi.org/10.1029/93GL00846> |
op_doi |
https://doi.org/10.1029/93GL00846 |
container_title |
Geophysical Research Letters |
container_volume |
20 |
container_issue |
11 |
container_start_page |
1011 |
op_container_end_page |
1014 |
_version_ |
1810441977462784000 |