TY - GEN
T1 - Ionosphere-thermosphere coupling during the 22-23 June 2015 geomagnetic storm
T2 - 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
AU - Pitout, F.
AU - Loutfi, A.
AU - Bounhir, A.
AU - Buchert, S. C.
AU - Benkhaldoun, Z.
AU - Makela, J. J.
N1 - Funding Information:
This project is financially supported by Campus France through the French-Moroccan bilateral program "PHC Toubkal 2019" (grant number 41409WJ). Swarm data were retrieved from ESA’s Earth Online web-site: https://earth.esa.int/web/guest/swarm/data-access.
Publisher Copyright:
© 2021 URSI.
PY - 2021/8/28
Y1 - 2021/8/28
N2 - We investigate the response of the ionosphere-thermosphere coupled system to the 22-23 June 2015 geomagnetic storm in the region above the Oukaimeden observatory in Morocco with a Fabry-Perot interferometer and the Swarm satellites. The measured thermospheric neutral winds are strong enough to have two direct consequences. First, they create a strong asymmetry in the equatorial ionisation crests on both sides of the magnetic equator (actually, they make the southern hemisphere crest disappear). This asymmetry is explained by the southerly thermospheric neutral wind that was blowing during the storm and is shown to be favoured by the season. Second, within the northern hemisphere ionisation crest, Swarm A and C detect km-size electron density structures. Those may be ascribed to gradient drift instability.
AB - We investigate the response of the ionosphere-thermosphere coupled system to the 22-23 June 2015 geomagnetic storm in the region above the Oukaimeden observatory in Morocco with a Fabry-Perot interferometer and the Swarm satellites. The measured thermospheric neutral winds are strong enough to have two direct consequences. First, they create a strong asymmetry in the equatorial ionisation crests on both sides of the magnetic equator (actually, they make the southern hemisphere crest disappear). This asymmetry is explained by the southerly thermospheric neutral wind that was blowing during the storm and is shown to be favoured by the season. Second, within the northern hemisphere ionisation crest, Swarm A and C detect km-size electron density structures. Those may be ascribed to gradient drift instability.
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U2 - 10.23919/URSIGASS51995.2021.9560388
DO - 10.23919/URSIGASS51995.2021.9560388
M3 - Conference contribution
AN - SCOPUS:85118257783
T3 - 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
BT - 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 28 August 2021 through 4 September 2021
ER -