@Article{KlausnerMendDomiRein:2015:CaStUs,
author = "Klausner, Virginia and Mendes J{\'u}nior, Odim and Domingues,
Margarete Oliveira and Reinaldo Rodrigues Papa, Andres",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Observat{\'o}rio Nacional
(ON)}",
title = "Main patterns of the geomagnetic field: a case study using
principal component analysis",
journal = "Physicae",
year = "2015",
volume = "11",
number = "11",
pages = "1--11",
note = "{Setores de Atividade: Transporte a{\'e}reo.}",
keywords = "An{\'a}lise de dados.",
abstract = "The horizontal magnetic components observed by ground-based
observatories belonging to the INTERMAGNET network have been used
to analyze the global pattern of the geomagnetic field variation.
The approach is based on the Principal Component Analysis method
applied to magnetograms from 2000 to 2005. Quiet and disturbed
days were geomagnetically distinguished. The pattern of the
geomagnetic field variation fluctuates bewilderingly over time. In
this work, we are interested in determining the geomagnetic field
variability presenting in each principal component. The results
suggest that the oscillation patterns of the first, second and
third components could be explained respectively by the first one,
two and three terms of the geomagnetic field spherical harmonic
expansion. The principal components provide a meaningful way to
appraise the overall space-time decomposition of the geomagnetic
field.",
doi = "10.5196/physicae.v0i11.321",
url = "http://dx.doi.org/10.5196/physicae.v0i11.321",
issn = "2236-3521",
label = "lattes: 4693848330845067 3 KlausnerMendDomiPapa:2015:CaStUs",
language = "en",
targetfile = "1_klausner.pdf",
urlaccessdate = "27 abr. 2024"
}