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...
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SPRINGER VERLAG
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Online Access: | http://hdl.handle.net/2381/19531 http://www.ann-geophys.net/12/1158/1994/angeo-12-1158-1994.html https://doi.org/10.1007/s005850050139 |
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ftleicester:oai:lra.le.ac.uk:2381/19531 2023-05-15T16:04:31+02:00 CRRES/Ground-based multi-instrument observations of an interval of substorm activity Yeoman, T. K. Luhr, H. Friedel, R. W. H. Coles, S. Grande, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. 2012-10-24T09:07:19Z metadata http://hdl.handle.net/2381/19531 http://www.ann-geophys.net/12/1158/1994/angeo-12-1158-1994.html https://doi.org/10.1007/s005850050139 English eng SPRINGER VERLAG ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, 1994, 12 (12), pp. 1158-1173 0992-7689 http://hdl.handle.net/2381/19531 http://www.ann-geophys.net/12/1158/1994/angeo-12-1158-1994.html doi:10.1007/s005850050139 Copyright © European Geosciences Union 1994 Web of Science http://webofknowledge.com Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology WESTWARD TRAVELING SURGE MAGNETOSPHERIC MAGNETIC-FIELD NEAR-EARTH MAGNETOTAIL CURRENT WEDGE POLARIZATION PATTERNS SYNCHRONOUS ORBIT ELECTRIC-FIELDS PULSATIONS SATELLITE EISCAT Journal Article 2012 ftleicester https://doi.org/10.1007/s005850050139 2019-03-22T20:16:58Z 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. 45096 Article in Journal/Newspaper EISCAT University of Leicester: Leicester Research Archive (LRA) Annales Geophysicae 12 12 1158 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology WESTWARD TRAVELING SURGE MAGNETOSPHERIC MAGNETIC-FIELD NEAR-EARTH MAGNETOTAIL CURRENT WEDGE POLARIZATION PATTERNS SYNCHRONOUS ORBIT ELECTRIC-FIELDS PULSATIONS SATELLITE EISCAT |
spellingShingle |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology WESTWARD TRAVELING SURGE MAGNETOSPHERIC MAGNETIC-FIELD NEAR-EARTH MAGNETOTAIL CURRENT WEDGE POLARIZATION PATTERNS SYNCHRONOUS ORBIT ELECTRIC-FIELDS PULSATIONS SATELLITE EISCAT Yeoman, T. K. Luhr, H. Friedel, R. W. H. Coles, S. Grande, 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 |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology WESTWARD TRAVELING SURGE MAGNETOSPHERIC MAGNETIC-FIELD NEAR-EARTH MAGNETOTAIL CURRENT WEDGE POLARIZATION PATTERNS SYNCHRONOUS ORBIT ELECTRIC-FIELDS PULSATIONS SATELLITE EISCAT |
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. 45096 |
format |
Article in Journal/Newspaper |
author |
Yeoman, T. K. Luhr, H. Friedel, R. W. H. Coles, S. Grande, M. Perry, C. H. Lester, M. Smith, P. N. Singer, H. J. Orr, D. |
author_facet |
Yeoman, T. K. Luhr, H. Friedel, R. W. H. Coles, S. Grande, 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 |
2012 |
url |
http://hdl.handle.net/2381/19531 http://www.ann-geophys.net/12/1158/1994/angeo-12-1158-1994.html https://doi.org/10.1007/s005850050139 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
Web of Science http://webofknowledge.com |
op_relation |
ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, 1994, 12 (12), pp. 1158-1173 0992-7689 http://hdl.handle.net/2381/19531 http://www.ann-geophys.net/12/1158/1994/angeo-12-1158-1994.html doi:10.1007/s005850050139 |
op_rights |
Copyright © European Geosciences Union 1994 |
op_doi |
https://doi.org/10.1007/s005850050139 |
container_title |
Annales Geophysicae |
container_volume |
12 |
container_issue |
12 |
container_start_page |
1158 |
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1766400092252667904 |