@Article{OliveiraEsMoCoSoLoAb:2020:SiMe,
author = "Oliveira, Cesar Buchile Abud and Espejo, Teddy Modesto Surco and
Moraes, Alison de Oliveira and Costa, Emanuel and Sousasantos,
Jonas and Louren{\c{c}}o, Lu{\'{\i}}s Felipe Dias and Abdu,
Mangalathayil Ali",
affiliation = "{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and
{Pontif{\'{\i}}cia Universidade Cat{\'o}lica do Rio de Janeiro
(PUC-Rio)} and {Instituto Tecnol{\'o}gico de Aeron{\'a}utica
(ITA)} and {Pontif{\'{\i}}cia Universidade Cat{\'o}lica do Rio
de Janeiro (PUC-Rio)} and {Instituto Tecnol{\'o}gico de
Aeron{\'a}utica (ITA)} and Embraer and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Analysis of plasma bubble signatures in total electron content
maps of the low-latitude ionosphere: a simplified methodology",
journal = "Surveys in Geophysics",
year = "2020",
volume = "41",
number = "4",
pages = "897--931",
month = "July",
keywords = "Low-latitude ionosphere, Equatorial ionosphere phenomenology,
Equatorial plasma bubbles, Total electron content measurements,
Ionospheric mapping.",
abstract = "The ionosphere over the Brazilian region has particular
characteristics due to the large geomagnetic declination angle
over most of the territory. Furthermore, the equatorial ionization
anomaly southern crest is located over the Brazilian territory. In
this region, plasma irregularities may arise in the post-sunset
hours. These ionospheric irregularities develop in the form of
magnetic field-aligned plasma depletions, known as equatorial
plasma bubbles, which may seriously affect radio signals that
propagate through them. These irregularity structures can cause
amplitude and phase scintillation of the propagating signals,
thereby compromising the availability, performance, and integrity
of satellite-based communication and navigation systems.
Additionally, the total electron content (TEC) introduces
propagation delays that can contribute to range measurement errors
for global positioning system (GPS) users. The ionospheric
characteristics change significantly according to the time of day,
season, as well as the solar and geomagnetic activities, among
other factors. Indeed, the ionosphere is one of the most
significant sources of errors in the positioning and navigation
systems based on the GPS satellites. Due to these features, there
is a strong interest by the scientific community in better
understanding and characterizing the ionospheric behavior. In this
context, the TEC analysis has wide applicability for space plasma
studies and is a well-established tool for investigating the
ionospheric behavior and its potential impact on space-based
navigation systems. One of the goals of these studies is the
generation of TEC maps for a geographic region based on GPS
observations. In the present work, some electrodynamic processes
of the low-latitude ionosphere are reviewed and the TEC estimation
based on GPS measurements is revisited in detail. A methodology
aimed at creating the TEC maps is presented and validated by
comparison with results from other geophysical instruments, such
as all-sky imagers and ionosondes. Finally, examples of the
ionospheric behavior displayed by TEC maps during equatorial
plasma bubble events and a geomagnetic storm are fully described
and discussed.",
doi = "10.1007/s10712-020-09584-7",
url = "http://dx.doi.org/10.1007/s10712-020-09584-7",
issn = "0169-3298",
language = "en",
targetfile = "Oliveira2020_Article_AnalysisOfPlasmaBubbleSignatur.pdf",
urlaccessdate = "01 jun. 2024"
}