Inter-hemispheric analysis of daytime low ionosphere behavior from 2007 to 2011
Tipo
Artigo
Data de publicação
2013
Periódico
Journal of Atmospheric and Solar-Terrestrial Physics
Citações (Scopus)
4
Autores
Correia E.
Raulin J.-P.
Kaufmann P.
Bertoni F.
Quevedo M.T.
Raulin J.-P.
Kaufmann P.
Bertoni F.
Quevedo M.T.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
The lower ionosphere behavior from 2007 to 2011 is studied using VLF signals propagating over long distances and received at Comandante Ferraz Brazilian Antarctic Station and Atibaia/Brazil. The VLF signals show high day-to-day variations of the mid-day amplitude, which present a clear seasonal behavior occurring predominantly during wintertime in all years. These high VLF amplitude variations show a significant component with 16-day period, which is typical of planetary waves of stratospheric/tropospheric origin. These results reinforced the solar control of the lower ionosphere and the evidence of vertical couplings in the atmosphere-ionosphere system, even during the 24th solar cycle increasing activity. © 2012 Elsevier Ltd.
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Palavras-chave
Assuntos Scopus
Amplitude variations , Antarctic stations , Low ionosphere , Lower ionosphere , Planetary Waves , Solar control , Solar cycle , Vertical coupling , VLF propagation