@Article{FrancoEcheBolz:2019:WaAnMa,
author = "Franco, Adriane Marques de Souza and Echer, Ezequiel and Bolzan,
Maur{\'{\i}}cio Jos{\'e} Alves",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de Jata{\'{\i}}}",
title = "Wavelet analysis of the magnetotail response to solar wind
fluctuations during HILDCAA events",
journal = "Annales Geophysicae",
year = "2019",
volume = "37",
number = "5",
pages = "919--929",
month = "Oct.",
abstract = "In this work a study of the effects of the highintensity
long-duration continuous AE activity (HILDCAAs) events in the
magnetotail was conducted. The aim of this study was to search the
main frequencies during HILDCAAs in the Bx component of the
geomagnetic field in the magnetotail, as well as the main
frequencies, at which the magnetotail responds to the solar wind
during these events. In order to conduct this analysis the wavelet
transform was employed during nine HILDCAA events that coincided
with Cluster spacecraft mission crossing through the tail of the
magnetosphere from 2003 to 2007. The most energetic periods for
each event were identified. It was found that 76 % of them have
periods \≤ 4 h. With the aim to search the periods that
have the highest correlation between the IMF Bz (OMNI) component
and the Cluster Bx geomagnetic field component, the cross wavelet
analysis technique was also used in this study. The majority of
correlation periods between the Bz (IMF) and Bx component of the
geomagnetic field observed also were \≤ 4 h, with 62.9 % of
the periods. Thus the magnetotail responds stronger to IMF
fluctuations during HILDCCAS at 24 h scales, which are typical
substorm periods. The results obtained in this work show that
these scales are the ones on which the coupling of energy is
stronger, as well as the modulation of the magnetotail by the
solar wind during HILDCAA events.",
doi = "10.5194/angeo-37-919-2019",
url = "http://dx.doi.org/10.5194/angeo-37-919-2019",
issn = "0992-7689",
language = "en",
targetfile = "franco-wavelet.pdf",
urlaccessdate = "04 maio 2024"
}