Počet záznamů: 1
Analysis of fine ELF wave structures observed poleward from the ionospheric trough by the low-altitude satellite DEMETER
- 1.
SYSNO ASEP 0429238 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Analysis of fine ELF wave structures observed poleward from the ionospheric trough by the low-altitude satellite DEMETER Tvůrce(i) Parrot, M. (FR)
Nĕmec, F. (CZ)
Santolík, Ondřej (UFA-U) RID, ORCIDZdroj.dok. Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 119, č. 3 (2014), s. 2052-2060Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova trough ; EMIC ; substorm Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GAP205/10/2279 GA ČR - Grantová agentura ČR LH12231 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFA-U - RVO:68378289 UT WOS 000336218300051 EID SCOPUS 84899057718 DOI 10.1002/2013JA019557 Anotace DEMETER was a three-axis stabilized Earth-pointing spacecraft launched on 29 June 2004 into a low-altitude (710 km) polar and circular orbit that was subsequently lowered to 650 km until the end of the mission in December 2010. DEMETER measured electromagnetic waves all around the Earth except at magnetic invariant latitudes >65°. The frequency range for the electric field was from DC up to 3.5 MHz and for the magnetic field from a few hertz up to 20 kHz. Electromagnetic ion cyclotron (EMIC) waves have been previously observed by DEMETER close to the ionospheric trough during high magnetic activity, and this paper describes another type of EMIC waves. These waves are also observed close to the trough, but they extend poleward, with the trough acting as a boundary. They are observed exclusively during the night and preferentially during geomagnetic substorms. The analysis of wave propagation shows that they propagate nearly along the ambient magnetic field and that they come from larger radial distances. Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2015
Počet záznamů: 1