@MastersThesis{SánchezJuarez:2019:DiGeIo,
author = "S{\'a}nchez Juarez, Sa{\'u}l Alejandro",
title = "Dist{\'u}rbios geomagn{\'e}ticos e ionosf{\'e}ricos durante
eventos s{\'{\i}}smicos moderados e intenso",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2019",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2019-02-18",
keywords = "atividade s{\'{\i}}smica, dist{\'u}rbios ionosf{\'e}ricos,
SAIDs, ondas alfv{\'e}n, seismic activity, ionospheric
disturbances, alfv{\'e}n waves.",
abstract = "Esta disserta{\c{c}}{\~a}o visa investigar Dist{\'u}rbios
Ionosf{\'e}ricos Sismog{\^e}nicos Propagantes, do ingl{\^e}s
{"}Seismic Triggered Travelling Ionospheric Disturbances{"}
(SAIDs) sobre a Am{\'e}rica do Sul, a partir de dados
geomagn{\'e}ticos e ionosf{\'e}ricos. Este assunto {\'e}
relativamente novo no contexto desse continente, que
frequentemente hospeda atividades s{\'{\i}}smicas. O objetivo
deste trabalho {\'e} aplicar as ferramentas de an{\'a}lise nos
dados obtidos com v{\'a}rios instrumentos e suas
interpreta{\c{c}}{\~o}es, que podem num futuro pr{\'o}ximo,
facilitar a previs{\~a}o de terremotos e tsunamis. Desta forma
ser{\~a}o abordados os seguintes t{\'o}picos: (1)
Aplica{\c{c}}{\~a}o das ferramentas Transformada de
Hilbert-Huang (HHT) e Transformada Wavelet Cont{\'{\i}}nua
(CWT), para detectar propaga{\c{c}}{\~a}o de ondas nas
s{\'e}ries temporais; (2) An{\'a}lise dos dados de Conte{\'u}do
Eletr{\^o}nico Total (do ingl{\^e}s Total Electron Content -
TEC), do campo geomagn{\'e}tico e de sismogramas utilizando para
isso receptores GNSS (Global Navigation Satellite System),
magnet{\^o}metros e sism{\^o}metros, respectivamente; (3)
Interpreta{\c{c}}{\~a}o das caracter{\'{\i}}sticas observadas
dos SAIDs, baseado no mecanismo que envolve as ondas
s{\'{\i}}smicas, atmosf{\'e}ricas e ionosf{\'e}ricas. Para
isso, foram escolhidos tr{\^e}s eventos de terremoto de
diferentes magnitudes, um deles de magnitude moderada equivalente
{\`a} MW=6,3, e outros dois de magnitudes fortes equivalentes
{\`a} MW=6,8 e {\`a} MW=7,1. Os resultados obtidos s{\~a}o os
seguintes: (1) SAIDs podem ser identificados nos dados
ionosf{\'e}ricos, (2) SAIDs associados com eventos fortes
s{\~a}o detectados ambos qualitativamente e quantitativamente,
(3) SAIDs associados com o evento moderado s{\~a}o detectadas
apenas qualitativamente, (4) Uma tentativa sucedida de detectar
SAIDs de evento moderado como obtido nesta
disserta{\c{c}}{\~a}o, pode vir a facilitar a previs{\~a}o de
terremoto forte, (5) SAIDs s{\~a}o gerados devido ao acoplamento
Litosfera-Atmosfera-Ionosfera (LAI) em que as ondas
atmosf{\'e}ricas amplificam sua amplitude a uma taxa de 1 mm/s em
rela{\c{c}}{\~a}o {\`a} superf{\'{\i}}cie da Terra. ABSTRACT:
This dissertation aims to investigate {"}Seismic Triggered
Traveling Ionospheric Disturbances{"} (SAIDs) over South America,
using geomagnetic and ionospheric data. This subject is relatively
new in the context of South America that often hosts seismic
activities. The objective of this work is to apply the tools of
data analysis obtained with several instruments and their
interpretations, which can facilitate the prediction of
earthquakes and tsunamis. In this way the following topics will be
addressed: (1) Application of Hilbert Huang Transform (HHT) and
Continuous Wavelet Transform (CWT) to analyze the time series and
the propagation of the waves, (2) Analysis of the Total Electron
Content (TEC) data, Geomagnetic field and the seismic waves
through Global Navigation Satellite System (GNSS) receivers,
magnetometers and seismometers, respectively. (3) Interpretation
of the SAIDs observed characteristics, based on the mechanism that
involves the atmospheric seismic waves and ionospheric waves. We
choose three earthquake events of different magnitudes, one of
moderate magnitude equivalent to MW = 6.3, and two others of
strong magnitudes equivalent to MW = 6.8 and MW = 7.3. The
expected results are as follows: (1) SAIDs can be identified in
the ionospheric data, (2) SAIDs associated with strong events are
detected both qualitatively and quantitatively, (3) SAIDs
associated with the moderate event are only detected
qualitatively, (4) a successful attempt to detect moderate event
SAIDs facilitates strong earthquake prediction, (5) SAIDs are
products of Lithosphere Atmosphere Ionosphere (LAI) coupling in
which atmospheric waves amplify their amplitude at a rate of 1
mm/s relative to the Earths surface for a 10 m/s wind in the
ionosphere, that can generate detectable SAIDs.",
committee = "Alves, Maria Virginia (presidente) and Paula, Eurico Rodrigues de
(orientador) and Oliveira, Virginia Klausner de (orientadora) and
Dutra, Severino Luiz Guimar{\~a}es and Kherani, Esfhan Alam and
Nogueira, Paulo Alexandre Bronzato",
englishtitle = "Geomagnetic and ionospheric disturbances during moderate and
intense seismic events",
language = "pt",
pages = "97",
ibi = "8JMKD3MGP3W34R/3SNDERP",
url = "http://urlib.net/ibi/8JMKD3MGP3W34R/3SNDERP",
targetfile = "publicacao.pdf",
urlaccessdate = "16 abr. 2024"
}