@Article{JonahPaMuDuKhNeOt:2015:TEVaDu,
author = "Jonah, Olusegun Folarin and Paula, Eurico Rodrigues de and Muella,
M. T. and Durtra, Severino Luiz Guimar{\~a}es and Kherani, Esfhan
Alam and Negreti, Patr{\'{\i}}cia Mara de Siqueira and Otsuka,
Y.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade do Vale
do Para{\'{\i}}ba (UNIVAP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Nagoya University}",
title = "TEC variation during high and low solar activities over South
American sector",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
year = "2015",
volume = "135",
pages = "22--35",
month = "Dec.",
keywords = "Total Electron Content (TEC), Diurnal, seasonal, latitudinal and
longitudinal variations of TEC, TEC periodicity during high and
low solar activities, Equatorial Ionization anomaly at different
seasons.",
abstract = "Using dual frequency GPS receivers in the South American sector,
the measurement of absolute ionospheric Total Electron Content
(TEC) has been estimated applying the Nagoya ionospheric model for
both the years of 2009 and 2001, which represent low and high
solar activities, respectively. The diurnal, day-to-day, monthly,
seasonal, latitudinal and longitudinal variations of TEC were
studied for equatorial and low latitude regions of South America.
The strength and characteristics of the Equatorial Ionization
Anomaly (EIA) were equally analyzed. The analyses reveal the
diurnal, seasonal and semidiurnal TEC variation, as well as the
nighttime variability during the low and high solar activities.
Wavelet power spectra analysis was employed to check the
periodicities of the TEC data, F10.7 and zonal and meridional wind
velocities measured by Meteor radar at \∼100 km altitude.
Periods such as 27, 16, 810, 15 days were found to be dominant in
the zonal and meridional wind velocity corresponding with those of
TEC periodicities. Hence, besides the solar radiation, we suggest
that there are contributions of tides and planetary waves in
spatial and temporal TEC enhancement and variations during the
geomagnetic quiet periods of both solar activities.",
doi = "10.1016/j.jastp.2015.10.005",
url = "http://dx.doi.org/10.1016/j.jastp.2015.10.005",
issn = "1364-6826",
language = "en",
urlaccessdate = "27 abr. 2024"
}