Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Johnsen Magnar G."'
Autor:
Bosse Léo, Lilensten Jean, Johnsen Magnar G., Gillet Nicolas, Rochat Sylvain, Delboulbé Alain, Curaba Stephane, Ogawa Yasunobu, Derverchère Philippe, Vauclair Sébastien
Publikováno v:
Journal of Space Weather and Space Climate, Vol 12, p 17 (2022)
It is now established that auroral emissions as measured from the ground are polarised. The question of the information given by this polarisation is still to be explored. This article shows the results of a coordinated campaign between an optical po
Externí odkaz:
https://doaj.org/article/eb0357439dee43ecb06a5d1d7e60c274
Autor:
Bosse Léo, Lilensten Jean, Gillet Nicolas, Rochat Sylvain, Delboulbé Alain, Curaba Stephane, Roux Alain, Magnard Yves, Johnsen Magnar G., Løvhaug Unni-Pia, Amblard Pierre-Olivier, Le Bihan Nicolas, Nabon Maxime, Marif Hanane, Auriol Frédérique, Noûs Camille
Publikováno v:
Journal of Space Weather and Space Climate, Vol 10, p 35 (2020)
We present here observations of the polarisation of four auroral lines in the auroral oval and in the polar cusp using a new ground polarimeter called Petit Cru. Our results confirm the already known polarisation of the red line, and show for the fir
Externí odkaz:
https://doaj.org/article/633c5e6b3a4b450db9d5684a3c50fb71
Publikováno v:
Journal of Space Weather and Space Climate, Vol 6, p A37 (2016)
The geomagnetic field often experiences large fluctuations, especially at high latitudes in the auroral zones. We have found, using simulations, that there are significant differences in the substorm signature, in certain coordinate systems, as a fun
Externí odkaz:
https://doaj.org/article/c4a205d818844e7192cfe2bb2a29c5d0
Autor:
Bosse, Léo, Lilensten, Jean, Gillet, Nicolas, Brogniez, Colette, Pujol, Olivier, Rochat, Sylvain, Delboulbé, Alain, Curaba, Stéphane, Johnsen, Magnar G.
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics May 2023 246
Direct impact excitation by precipitating electrons is believed to be the main source of 630.0 nm emissions in the cusp ionosphere. However, this paper investigates a different source, 630.0 emissions caused by thermally excited atomic oxygen O$(^{1}
Externí odkaz:
http://arxiv.org/abs/1706.00318
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics 15 September 2021 221
Autor:
Stavros Dimitrakoudis, Masatoshi Yamauchi, Johnsen Magnar G., Escoubet Philippe, Araki Tohru, Raita Tero, Mann Ian R., Dandouras Iannis, Lindqvist Per-Arne, Carr Christopher M.
On 15 April 2022, the Kiruna magnetometer detected an isolated geomagnetic spike of 400 nT with rising time of 2 minutes. This is on the same level of large sudden commencements (historically largest one is about 1000 nT in Kiruna), but this event wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34a65c167a76fde02c84d91cf14e06d6
https://doi.org/10.5194/egusphere-egu23-4032
https://doi.org/10.5194/egusphere-egu23-4032
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Magnetic Observatories have been in operation in Norway for more than a century. To evaluate magnetic disturbances and to convey these to the scientific community, various magneticindiceshave been calculatedand published throughout most of the histor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1203b50249de1e5f1176566834cdb127
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018954
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018954