Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field
International audience We present a comparison between properties of quasiperiodic (QP) extra low frequency/very low frequency emissions observed by the low-altitude DEMETER spacecraft and ultra-low frequency (ULF) geomagnetic field pulsations measured on the ground by the Canadian Array for Realtim...
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Online Access: | https://insu.hal.science/insu-04087585 https://insu.hal.science/insu-04087585/document https://insu.hal.science/insu-04087585/file/JGR%20Space%20Physics%20-%202023%20-%20Hajo%20-%20Quasiperiodic%20ELF%20VLF%20Emissions%20Associated%20With%20Corresponding%20Pulsations%20of%20the.pdf https://doi.org/10.1029/2022JA031103 |
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ftinsu:oai:HAL:insu-04087585v1 2024-01-14T10:10:40+01:00 Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field Hajoš, M. Němec, F. Demekhov, A. Santolík, O. Parrot, M. Raita, T. Bezděková, B. Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) 2023 https://insu.hal.science/insu-04087585 https://insu.hal.science/insu-04087585/document https://insu.hal.science/insu-04087585/file/JGR%20Space%20Physics%20-%202023%20-%20Hajo%20-%20Quasiperiodic%20ELF%20VLF%20Emissions%20Associated%20With%20Corresponding%20Pulsations%20of%20the.pdf https://doi.org/10.1029/2022JA031103 en eng HAL CCSD American Geophysical Union/Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JA031103 insu-04087585 https://insu.hal.science/insu-04087585 https://insu.hal.science/insu-04087585/document https://insu.hal.science/insu-04087585/file/JGR%20Space%20Physics%20-%202023%20-%20Hajo%20-%20Quasiperiodic%20ELF%20VLF%20Emissions%20Associated%20With%20Corresponding%20Pulsations%20of%20the.pdf BIBCODE: 2023JGRA.12831103H doi:10.1029/2022JA031103 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9380 EISSN: 2169-9402 Journal of Geophysical Research Space Physics https://insu.hal.science/insu-04087585 Journal of Geophysical Research Space Physics, 2023, 128, ⟨10.1029/2022JA031103⟩ QP emissions quasiperiodic DEMETER CARISMA [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftinsu https://doi.org/10.1029/2022JA031103 2023-12-20T17:23:29Z International audience We present a comparison between properties of quasiperiodic (QP) extra low frequency/very low frequency emissions observed by the low-altitude DEMETER spacecraft and ultra-low frequency (ULF) geomagnetic field pulsations measured on the ground by the Canadian Array for Realtime Investigations of Magnetic Activity system of flux-gate magnetometers and by the Sodankylä Geophysical Observatory magnetometer. Altogether, we have analyzed 398 QP events observed at the times when DEMETER was close to the ground-based magnetometers. The modulation periods of the analyzed QP events were larger than 10 s and their frequency bandwidths were larger than 200 Hz. For a part of QP emissions with modulation periods about 30 s, there was a good agreement between the modulation periods and peak frequencies of ULF magnetic field pulsations measured on the ground. These QP emissions appear to be closely associated with coincident geomagnetic pulsations (QP1 type), and they represent ∼18% of the total number of analyzed QP events. No corresponding geomagnetic pulsations were identified in the remaining 82% of QP events (QP2 type). The intensity of QP1 events does not seem to correlate with the intensity of geomagnetic field pulsations, while the intensity of QP2 events increases with the integral intensity of geomagnetic field pulsations. Based on the observed association between QP emissions and geomagnetic field pulsations, we estimate the radial distance of the generation region of QP1 emissions to L ∼ 7. Article in Journal/Newspaper Sodankylä Institut national des sciences de l'Univers: HAL-INSU Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Journal of Geophysical Research: Space Physics 128 4 |
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collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
QP emissions quasiperiodic DEMETER CARISMA [SDU]Sciences of the Universe [physics] |
spellingShingle |
QP emissions quasiperiodic DEMETER CARISMA [SDU]Sciences of the Universe [physics] Hajoš, M. Němec, F. Demekhov, A. Santolík, O. Parrot, M. Raita, T. Bezděková, B. Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
topic_facet |
QP emissions quasiperiodic DEMETER CARISMA [SDU]Sciences of the Universe [physics] |
description |
International audience We present a comparison between properties of quasiperiodic (QP) extra low frequency/very low frequency emissions observed by the low-altitude DEMETER spacecraft and ultra-low frequency (ULF) geomagnetic field pulsations measured on the ground by the Canadian Array for Realtime Investigations of Magnetic Activity system of flux-gate magnetometers and by the Sodankylä Geophysical Observatory magnetometer. Altogether, we have analyzed 398 QP events observed at the times when DEMETER was close to the ground-based magnetometers. The modulation periods of the analyzed QP events were larger than 10 s and their frequency bandwidths were larger than 200 Hz. For a part of QP emissions with modulation periods about 30 s, there was a good agreement between the modulation periods and peak frequencies of ULF magnetic field pulsations measured on the ground. These QP emissions appear to be closely associated with coincident geomagnetic pulsations (QP1 type), and they represent ∼18% of the total number of analyzed QP events. No corresponding geomagnetic pulsations were identified in the remaining 82% of QP events (QP2 type). The intensity of QP1 events does not seem to correlate with the intensity of geomagnetic field pulsations, while the intensity of QP2 events increases with the integral intensity of geomagnetic field pulsations. Based on the observed association between QP emissions and geomagnetic field pulsations, we estimate the radial distance of the generation region of QP1 emissions to L ∼ 7. |
author2 |
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) |
format |
Article in Journal/Newspaper |
author |
Hajoš, M. Němec, F. Demekhov, A. Santolík, O. Parrot, M. Raita, T. Bezděková, B. |
author_facet |
Hajoš, M. Němec, F. Demekhov, A. Santolík, O. Parrot, M. Raita, T. Bezděková, B. |
author_sort |
Hajoš, M. |
title |
Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
title_short |
Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
title_full |
Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
title_fullStr |
Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
title_full_unstemmed |
Quasiperiodic ELF/VLF Emissions Associated With Corresponding Pulsations of the Geomagnetic Field |
title_sort |
quasiperiodic elf/vlf emissions associated with corresponding pulsations of the geomagnetic field |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://insu.hal.science/insu-04087585 https://insu.hal.science/insu-04087585/document https://insu.hal.science/insu-04087585/file/JGR%20Space%20Physics%20-%202023%20-%20Hajo%20-%20Quasiperiodic%20ELF%20VLF%20Emissions%20Associated%20With%20Corresponding%20Pulsations%20of%20the.pdf https://doi.org/10.1029/2022JA031103 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Sodankylä |
geographic_facet |
Sodankylä |
genre |
Sodankylä |
genre_facet |
Sodankylä |
op_source |
ISSN: 2169-9380 EISSN: 2169-9402 Journal of Geophysical Research Space Physics https://insu.hal.science/insu-04087585 Journal of Geophysical Research Space Physics, 2023, 128, ⟨10.1029/2022JA031103⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JA031103 insu-04087585 https://insu.hal.science/insu-04087585 https://insu.hal.science/insu-04087585/document https://insu.hal.science/insu-04087585/file/JGR%20Space%20Physics%20-%202023%20-%20Hajo%20-%20Quasiperiodic%20ELF%20VLF%20Emissions%20Associated%20With%20Corresponding%20Pulsations%20of%20the.pdf BIBCODE: 2023JGRA.12831103H doi:10.1029/2022JA031103 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2022JA031103 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
128 |
container_issue |
4 |
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1788065457508450304 |