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Azimuthal directions of equatorial noise propagation determined using 10 years of data from the Cluster spacecraft
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SYSNO ASEP 0423085 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Azimuthal directions of equatorial noise propagation determined using 10 years of data from the Cluster spacecraft Tvůrce(i) Němec, F. (CZ)
Santolík, Ondřej (UFA-U) RID, ORCID
Pickett, J. S. (US)
Hrbáčková, Zuzana (UFA-U) RID
Cornilleau-Wehrlin, N. (FR)Zdroj.dok. Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 118, č. 11 (2013), 7160–7169Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova equatorial noise ; fast magnetosonic waves ; fast magnetosonic waves Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP GAP205/10/2279 GA ČR - Grantová agentura ČR Institucionální podpora UFA-U - RVO:68378289 UT WOS 000329992900029 DOI 10.1002/2013JA019373 Anotace Equatorial noise (EN) emissions are electromagnetic waves at frequencies between the proton cyclotron frequency and the lower hybrid frequency routinely observed within a few degrees of the geomagnetic equator at radial distances from about 2 to 6 RE. They propagate in the extraordinary (fast magnetosonic) mode nearly perpendicularly to the ambient magnetic field. We conduct a systematic analysis of azimuthal directions of wave propagation, using all available Cluster data from 2001 to 2010. Altogether, combined measurements of the Wide-Band Data and Spectrum Analyzer of the Spatio-Temporal Analysis of Field Fluctuations instruments allowed us to determine azimuthal angle of wave propagation for more than 100 EN events. It is found that the observed propagation pattern is mostly related to the plasmapause location. While principally isotropic azimuthal directions of EN propagation were detected inside the plasmasphere, wave propagation in the plasma trough was predominantly found directed to the West or East, perpendicular to the radial direction. 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 2014
Počet záznamů: 1