Observations of the cusp region under northward IMF
International audience We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing northward at a low elevation rec...
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ftunivnantes:oai:HAL:hal-00329220v1 2023-05-15T16:04:35+02:00 Observations of the cusp region under northward IMF Pitout, F. Bosqued, J.-M. Alcaydé, D. Denig, W. F. Rème, H. Swedish Institute of Space Physics Kiruna (IRF) Centre d'étude spatiale des rayonnements (CESR) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Air Force Research Laboratory (AFRL) United States Air Force (USAF) 2001 https://hal.science/hal-00329220 https://hal.science/hal-00329220/document https://hal.science/hal-00329220/file/angeo-19-1641-2001.pdf en eng HAL CCSD European Geosciences Union hal-00329220 https://hal.science/hal-00329220 https://hal.science/hal-00329220/document https://hal.science/hal-00329220/file/angeo-19-1641-2001.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00329220 Annales Geophysicae, 2001, 19 (10/12), pp.1641-1653 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2001 ftunivnantes 2023-02-22T03:10:50Z International audience We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing northward at a low elevation recorded latitudinal motions of the cusp region in response to the IMF. Meanwhile, the Cluster satellites were flying over the EISCAT Svalbard Radar field-of-view around local magnetic noon. The spacecraft first flew near ESR, northeast of Svalbard and then passed over the field-of-view of the antenna at about 11:30 UT. From 08:00 UT to 09:00 UT, the IMF remains primarily southward yet several variations in the Z -component are seen to move the cusp. Around 09:00 UT, an abrupt northward turning of the IMF moves the cusp region to higher latitudes. As a result, the Cluster satellites ended up in the northernmost boundary of the high-altitude cusp region where the CIS instrument recorded highly structured plasma due to ion injections in the lobe of the magnetosphere. After 09:00 UT, the IMF remains northward for more than two hours. Over this period, the ESR records sunward plasma flow in the cusp region due to lobe reconnection, while Cluster spacecraft remain in the high-altitude cusp. Article in Journal/Newspaper EISCAT Svalbard Université de Nantes: HAL-UNIV-NANTES Svalbard |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Pitout, F. Bosqued, J.-M. Alcaydé, D. Denig, W. F. Rème, H. Observations of the cusp region under northward IMF |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing northward at a low elevation recorded latitudinal motions of the cusp region in response to the IMF. Meanwhile, the Cluster satellites were flying over the EISCAT Svalbard Radar field-of-view around local magnetic noon. The spacecraft first flew near ESR, northeast of Svalbard and then passed over the field-of-view of the antenna at about 11:30 UT. From 08:00 UT to 09:00 UT, the IMF remains primarily southward yet several variations in the Z -component are seen to move the cusp. Around 09:00 UT, an abrupt northward turning of the IMF moves the cusp region to higher latitudes. As a result, the Cluster satellites ended up in the northernmost boundary of the high-altitude cusp region where the CIS instrument recorded highly structured plasma due to ion injections in the lobe of the magnetosphere. After 09:00 UT, the IMF remains northward for more than two hours. Over this period, the ESR records sunward plasma flow in the cusp region due to lobe reconnection, while Cluster spacecraft remain in the high-altitude cusp. |
author2 |
Swedish Institute of Space Physics Kiruna (IRF) Centre d'étude spatiale des rayonnements (CESR) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Air Force Research Laboratory (AFRL) United States Air Force (USAF) |
format |
Article in Journal/Newspaper |
author |
Pitout, F. Bosqued, J.-M. Alcaydé, D. Denig, W. F. Rème, H. |
author_facet |
Pitout, F. Bosqued, J.-M. Alcaydé, D. Denig, W. F. Rème, H. |
author_sort |
Pitout, F. |
title |
Observations of the cusp region under northward IMF |
title_short |
Observations of the cusp region under northward IMF |
title_full |
Observations of the cusp region under northward IMF |
title_fullStr |
Observations of the cusp region under northward IMF |
title_full_unstemmed |
Observations of the cusp region under northward IMF |
title_sort |
observations of the cusp region under northward imf |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.science/hal-00329220 https://hal.science/hal-00329220/document https://hal.science/hal-00329220/file/angeo-19-1641-2001.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00329220 Annales Geophysicae, 2001, 19 (10/12), pp.1641-1653 |
op_relation |
hal-00329220 https://hal.science/hal-00329220 https://hal.science/hal-00329220/document https://hal.science/hal-00329220/file/angeo-19-1641-2001.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766400189274259456 |