Number of the records: 1

Analysis of fine ELF wave structures observed poleward from the ionospheric trough by the low-altitude satellite DEMETER

SYSNO ASEP	0429238
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Analysis of fine ELF wave structures observed poleward from the ionospheric trough by the low-altitude satellite DEMETER
Author(s)	Parrot, M. (FR) Nĕmec, F. (CZ) Santolík, Ondřej (UFA-U)_{RID, ORCID}
Source Title	Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380 Roč. 119, č. 3 (2014), s. 2052-2060
Number of pages	9 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	trough ; EMIC ; substorm
Subject RIV	BL - Plasma and Gas Discharge Physics
R&D Projects	GAP205/10/2279 GA ČR - Czech Science Foundation (CSF)
	LH12231 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UFA-U - RVO:68378289
UT WOS	000336218300051
EID SCOPUS	84899057718
DOI	10.1002/2013JA019557
Annotation	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.
Workplace	Institute of Atmospheric Physics
Contact	Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019
Year of Publishing	2015

Number of the records: 1