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Case studies of quasi-periodic VLF emissions and related ULF fluctuations of the magnetic field
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SYSNO ASEP 0436792 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Case studies of quasi-periodic VLF emissions and related ULF fluctuations of the magnetic field Tvůrce(i) Hayosh, Mykhaylo (UFA-U) RID, ORCID
Santolík, Ondřej (UFA-U) RID, ORCID
Němec, F. (CZ)
Parrot, M. (FR)Zdroj.dok. AGU Fall Meeting. - s. l : American Geophysical Union, 2014 Poč.str. 1 s. Akce AGU Fall Meeting Datum konání 15.12.2014-19.12.2014 Místo konání San Francisco Země US - Spojené státy americké Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Institucionální podpora UFA-U - RVO:68378289 Anotace Quasi-periodic (QP) VLF emissions are observed in the inner magnetosphere mostly on the day-side. These waves exhibit a periodic time modulation of the wave intensity that is possibly a result of the whistler-mode wave growth being periodically modulated by compressional ULF magnetic field pulsations. We have analyzed 50 QP events measured by the DEMETER satellite at altitudes of about 700 km to verify their generation mechanism. The analyzed events have a modulation period between 15 s and 80 s, and they were observed during quiet geomagnetic conditions (Kp<3). Magnetometers of the CARISMA system were used for monitoring the ULF magnetic field pulsations in a wide spatial range. We have found that ULF magnetic field pulsations in the Pc3 - Pc5 range are well correlated with the occurrence of the QP emissions with modulation periods between about 40 and 80 s. At the same time, increased fluxes of high-energy electrons (E > 30 keV) were observed by DEMETER and by the NOAA-17 satellite. We analyze possible links between these electrons, QP emissions, and ULF magnetic field pulsations. 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