CRRES/Ground-based multi-instrument observations of an interval of substorm activity
Observations are presented of data taken during a 3-h interval in which five clear substorm onsets/intensifications took place. During this interval ground-based data from the EISCAT incoherent scatter radar, a digital CCD all sky camera, and an extensive array of magnetometers were recorded. In add...
Published in: | Annales Geophysicae |
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1994
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00038041 2023-05-15T16:04:35+02:00 CRRES/Ground-based multi-instrument observations of an interval of substorm activity Yeoman, T. K. Lühr, H. Friedel, R. W. H. Coles, S. Grandé, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. 1994-12 electronic https://doi.org/10.1007/s00585-994-1158-1 https://noa.gwlb.de/receive/cop_mods_00038041 eng eng Springer Verlag Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.1007/s00585-994-1158-1 https://noa.gwlb.de/receive/cop_mods_00038041 https://open-access.net/ uneingeschränkt info:eu-repo/semantics/restrictedAccess article Verlagsveröffentlichung article Text doc-type:article 1994 ftnonlinearchiv https://doi.org/10.1007/s00585-994-1158-1 2022-02-08T22:43:15Z Observations are presented of data taken during a 3-h interval in which five clear substorm onsets/intensifications took place. During this interval ground-based data from the EISCAT incoherent scatter radar, a digital CCD all sky camera, and an extensive array of magnetometers were recorded. In addition data from the CRRES and DMSP spacecraft, whose footprints passed over Scandinavia very close to most of the ground-based instrumentation, are available. The locations and movements of the substorm current system in latitude and longitude, determined from ground and spacecraft magnetic field data, have been correlated with the locations and propagation of increased particle precipitation in the E-region at EISCAT, increased particle fluxes measured by CRRES and DMSP, with auroral luminosity and with ionospheric convection velocities. The onsets and propagation of the injection of magnetospheric particle populations and auroral luminosity have been compared. CRRES was within or very close to the substorm expansion phase onset sector during the interval. The onset region was observed at low latitudes on the ground, and has been confirmed to map back to within L=7 in the magnetotail. The active region was then observed to propagate tailward and poleward. Delays between the magnetic signature of the substorm field aligned currents and field dipolarisation have been measured. The observations support a near-Earth plasma instability mechanism for substorm expansion phase onset. Article in Journal/Newspaper EISCAT Niedersächsisches Online-Archiv NOA Annales Geophysicae 12 12 1158 1173 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Yeoman, T. K. Lühr, H. Friedel, R. W. H. Coles, S. Grandé, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
topic_facet |
article Verlagsveröffentlichung |
description |
Observations are presented of data taken during a 3-h interval in which five clear substorm onsets/intensifications took place. During this interval ground-based data from the EISCAT incoherent scatter radar, a digital CCD all sky camera, and an extensive array of magnetometers were recorded. In addition data from the CRRES and DMSP spacecraft, whose footprints passed over Scandinavia very close to most of the ground-based instrumentation, are available. The locations and movements of the substorm current system in latitude and longitude, determined from ground and spacecraft magnetic field data, have been correlated with the locations and propagation of increased particle precipitation in the E-region at EISCAT, increased particle fluxes measured by CRRES and DMSP, with auroral luminosity and with ionospheric convection velocities. The onsets and propagation of the injection of magnetospheric particle populations and auroral luminosity have been compared. CRRES was within or very close to the substorm expansion phase onset sector during the interval. The onset region was observed at low latitudes on the ground, and has been confirmed to map back to within L=7 in the magnetotail. The active region was then observed to propagate tailward and poleward. Delays between the magnetic signature of the substorm field aligned currents and field dipolarisation have been measured. The observations support a near-Earth plasma instability mechanism for substorm expansion phase onset. |
format |
Article in Journal/Newspaper |
author |
Yeoman, T. K. Lühr, H. Friedel, R. W. H. Coles, S. Grandé, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. |
author_facet |
Yeoman, T. K. Lühr, H. Friedel, R. W. H. Coles, S. Grandé, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. |
author_sort |
Yeoman, T. K. |
title |
CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
title_short |
CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
title_full |
CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
title_fullStr |
CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
title_full_unstemmed |
CRRES/Ground-based multi-instrument observations of an interval of substorm activity |
title_sort |
crres/ground-based multi-instrument observations of an interval of substorm activity |
publisher |
Springer Verlag |
publishDate |
1994 |
url |
https://doi.org/10.1007/s00585-994-1158-1 https://noa.gwlb.de/receive/cop_mods_00038041 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.1007/s00585-994-1158-1 https://noa.gwlb.de/receive/cop_mods_00038041 |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00585-994-1158-1 |
container_title |
Annales Geophysicae |
container_volume |
12 |
container_issue |
12 |
container_start_page |
1158 |
op_container_end_page |
1173 |
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1766400179000311808 |