@PhDThesis{BarbosaNeto:2021:MaÍnPe,
author = "Barbosa Neto, Paulo Fran{\c{c}}a",
title = "Mapa do {\'{\i}}ndice de perturba{\c{c}}{\~a}o
ionosf{\'e}rica (DIXMAP) sobre a regi{\~a}o da Am{\'e}rica do
Sul e sua rela{\c{c}}{\~a}o com tempestades geomagn{\'e}ticas",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2021",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2020-08-28",
keywords = "clima espacial, ionosfera, perturba{\c{c}}{\~a}o
ionosf{\'e}rica, tempestade magn{\'e}tica, bolhas de plasma,
space weather, ionosphere, ionospheric disturbance, magnetic
storm, equatorial plasma bubbles.",
abstract = "O Dixmap {\'e} uma forma generalizada do {\'{\i}}ndice DIX
(Disturbance Ionospheric IndeX) para as regi{\~o}es equatorial e
de baixa latitudes, adequando o {\'{\i}}ndice as
varia{\c{c}}{\~o}es latitudinais e ao comportamento particular
da ionosfera sobre a regi{\~a}o da Am{\'e}rica do Sul. A
constru{\c{c}}{\~a}o do mapa de DIX passa por quatro etapas
principais: a sele{\c{c}}{\~a}o dos dias de refer{\^e}ncia, a
sele{\c{c}}{\~a}o do valor do coeficiente \α
(par{\^a}metro de parametriza{\c{c}}{\~a}o de amplitude), a
defini{\c{c}}{\~a}o dos valores dos coeficientes \β
(coeficiente de normaliza{\c{c}}{\~a}o de escala) e a
constru{\c{c}}{\~a}o dos mapas. Os mapas de DIX
constru{\'{\i}}dos, cobrem uma faixa latitudinal entre 10°N e
60°S e uma faixa longitudinal entre 90°W e 30°W, com
resolu{\c{c}}{\~a}o de 5° em ambas as coordenadas e utiliza os
dados dos TECMAP, os quais s{\~a}o constru{\'{\i}}dos {\`a}
taxa de um mapa a cada 10 minutos, com resolu{\c{c}}{\~a}o
espacial variando entre 50 e 500 km, dependendo da densidade dos
pontos de observa{\c{c}}{\~a}o. Neste trabalho foi definido uma
metodologia para o c{\'a}lculo dos coeficientes \β e para a
constru{\c{c}}{\~a}o do mapa de DIXMap. Ap{\'o}s a
constru{\c{c}}{\~a}o dos DIXmaps, com o objetivo de testar a
capacidade do {\'{\i}}ndice proposto a processos externos, as
metodologias foram aplicadas a tr{\^e}s tempestades
magn{\'e}ticas (mar{\c{c}}o de 2015, dezembro de 2015 e abril de
2014). Al{\'e}m dos per{\'{\i}}odos perturbados, para testar a
capacidade do {\'{\i}}ndice proposto a processos internos, a
metodologia tamb{\'e}m foi aplicada a dois per{\'{\i}}odos
calmos 13 a 14 de fevereiro de 2015 e 10 de dezembro de 2015. Os
resultados obtidos com o novo {\'{\i}}ndice foram comparados com
ionogramas registrados nas esta{\c{c}}{\~o}es de Boa Vista
(BVJ03, 2.9°N 60.7°W, inclina{\c{c}}{\~a}o magn{\'e}tica:
-18.0°) e Cachoeira Paulista (CAJ2M, 22.7°S, 45°W,
inclina{\c{c}}{\~a}o magn{\'e}tica: -38.2°). Adicionalmente, os
resultados tamb{\'e}m foram comparados com imagens geradas por
imageadores instalados nas esta{\c{c}}{\~o}es de S{\~a}o
Jo{\~a}o do Cariri (SJCPB, 7.4°S 36.5°W, inclina{\c{c}}{\~a}o
magn{\'e}tica: -11.0°) e em Cachoeira Paulista (CAJ2M, 22.7°S,
45°W, inclina{\c{c}}{\~a}o magn{\'e}tica: -38.2°). Os mapas de
DIX constru{\'{\i}}dos s{\~a}o apresentados e discutidos em
termos da evolu{\c{c}}{\~a}o do seu comportamento latitudinal em
rela{\c{c}}{\~a}o ao Dst. Dentro deste contexto, o DIXMap
descreve parte da din{\^a}mica da ionosfera tanto para os
per{\'{\i}}odos perturbados quanto para os per{\'{\i}}odos
calmos. ABSTRACT: The DIXMap is a generalized form of DIX
(Disturbance Ionospheric IndeX) for the equatorial and low
latitude regions, adapting the index to latitudinal variations and
to the particular behavior of the ionosphere over the South
American region. The definition of the DIX map goes through four
main steps: the selection of the reference days, the selection of
the value of the \α coefficient (amplitude parameterization
constant), the definition of the values of the \β
coefficients (scale normalization coefficient) and the
construction of maps. The built-in DIX maps cover a latitudinal
range between 10 ° N and 60 ° S and a longitudinal range between
90 ° W and 30 ° W, with a resolution of 5 ° in both coordinates
and use data from TECMAP, which are built at the rate of a map
every 10 minutes, with spatial resolution ranging between 50 and
500 km, depending on the density of the observation points. In
this work, a methodology was defined for the calculation of the
\β coefficients and for the construction of the DIXMap map.
After the construction of DIXMaps, with the objective of testing
the capability of the proposed index to external processes, the
methodologies were applied to three magnetic storms (March 2015,
December 2015, and April 2014). In addition to the disturbed
periods, to test the capability of the proposed index to internal
processes, the methodology was also applied to two calm periods 13
to 14 February 2015 and 10 December 2015. The results obtained
with the new index were compared with ionograms registered at Boa
Vista (BVJ03, 2.9 ° N 60.7 ° W, magnetic inclination: -18.0 °) and
Cachoeira Paulista (CAJ2M, 22.7 ° S, 45 ° W, magnetic inclination:
-38.2 °). In addition, the results were also compared with images
generated by imagers installed at S{\~a}o Jo{\~a}o do Cariri
stations (SJCPB, 7.4 ° S 36.5 ° W, magnetic inclination: -11.0 °)
and at Cachoeira Paulista (CAJ2M, 22.7 ° S, 45 ° W, magnetic
inclination: -38.2 °). The built-in DIX maps are presented and
discussed in terms of the evolution of their latitudinal behavior
in relation to Dst. Within this context, DIXMap describes part of
the dynamics of the ionosphere for both disturbed and calm
periods.",
committee = "Wrasse, Cristiano Max (presidente) and De Nardin, Clezio Marcos
(orientador) and Nogueira, Paulo Alexandre Bronzato (orientador)
and Takahashi, Hisao and Dutra, Severino Luiz Guimar{\~a}es and
Fagundes, Paulo Roberto and Camargo, Paulo de Oliveira",
englishtitle = "Maps of disturbance ionosphere index (DIXMAP) over the South
America and its retio with geomagnetic storms",
language = "pt",
pages = "168",
ibi = "8JMKD3MGP3W34R/434Q8GH",
url = "http://urlib.net/ibi/8JMKD3MGP3W34R/434Q8GH",
targetfile = "publicacao.pdf",
urlaccessdate = "19 abr. 2024"
}