@Article{JesusBTPBFAJFV:2020:MoFeIo,
author = "Jesus, Rodolfo de and Batista, Inez Staciarini and Takahashi,
Hisao and Paula, Eurico Rodrigues de and Barros, D. and
Figueiredo, Cosme Alexandre Oliveira Barros and Abreu, A. J. de
and Jonah, O. F. and Fagundes, P. R. and Venkatesh, K.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and
{Massachusetts Institute of Technology (MIT)} and {Universidade do
Vale do Para{\'{\i}}ba (UNIVAP)} and National Atmospheric
Research Laboratory, Gadanki, India",
title = "Morphological features of ionospheric scintillations during high
solar activity using GPS observations over the south american
sector",
journal = "Journal of Geophysical Research: Space Physics",
year = "2020",
volume = "125",
number = "3",
pages = "JGRA55437",
month = "Mar.",
abstract = "The main objective of this study is to investigate the ionospheric
irregularities observed by Global Positioning System\‐total
electron content (GPS\‐TEC) receivers during the high solar
activity years of 2013 and 2014 at different stations in the
equatorial and low\‐latitude regions in the South American
sector. The ionospheric parameters used in this investigation are
the TEC, the rate of change of the TEC index (ROTI), and the
amplitude scintillation index (S4). In the South American sector,
the ROTI and S4 indices showed that the ionospheric irregularities
have an annual variation with maximum occurrence from September to
April, between 20:00 LT and 02:00 LT, and no occurrence from May
to August. Also, strong phase fluctuations (ROTI >1) are observed
over South America at 19 LT in October and November. Morlet
wavelet analysis of ROTI and S4 showed that planetary
wave\‐scale periods ranging from 2 to 8 days are
predominant during SeptemberMarch at 2002 LT in South America. In
addition, using a keogram it was possible to evaluate the distance
between adjacent ionospheric plasma depletions, and this result is
presented and discussed. The longitudinal distances between
adjacent bubbles vary around ~6001000 km, which is larger than
values reported in most previous studies.",
doi = "10.1029/2019JA027441",
url = "http://dx.doi.org/10.1029/2019JA027441",
issn = "2169-9402",
language = "en",
targetfile = "jesus_morphological-compactado.pdf",
urlaccessdate = "27 abr. 2024"
}