@Article{EcherGonzAlve:2006:MiVaAn,
author = "Echer, Ezequiel and Gonzalez, Walter Dem{\'e}trio and Alves,
Maria Virginia",
affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de
Geof{\'{\i}}sica Espacial (INPE.DGE) and Instituto Nacional de
Pesquisas Espaciais, Divis{\~a}o de Geof{\'{\i}}sica Espacial
(INPE.DGE) and {Instituto Nacional de Pesquisas Espaciais}",
title = "Minimum variance analysis of interplanetary coronal mass ejections
around solar cycle 23 maximum (1998-2002)",
journal = "Solar Physics",
year = "2006",
volume = "233",
number = "2",
pages = "249--263",
month = "Feb.",
keywords = "MAGNETIC CLOUDS, FIELD, SOLAR-CYCLE-23, VOYAGER.",
abstract = "The minimum variance analysis of interplanetary coronal mass
ejections (ICMEs) observed close to the Earth's orbit around solar
cycle 23 maximum (1998-2002) was performed. The ICMEs were
classified in three categories: magnetic clouds (MC), undefined
ejecta (UE), and complex ejecta (CE). An analysis of the full
ICMEs set shows that the average of minimum variance direction
inclination angle is 1.6 degrees +/- 24.8 degrees in relation to
the ecliptic plane, with more than 33% of the events presenting
inclination angles lower than 10 degrees. The average of minimum
variance direction azimuthal angle (in relation to the Sun-Earth
line) was 56 degrees. However, around 60% of the ICMEs presented
an azimuthal angle lower than 30 degrees, close to the radial
direction. It was also observed that the MC set had lower axial
(intermediate variance) inclinations relative to the ecliptic
plane than the UE and CE events. The intermediate variance axis is
close to 90 degrees to the Sun-Earth line. The results obtained in
the present analysis were also compared with previous works,
permitting a comparison of the ICMEs orientations in solar cycle
23 with previous sor cycles.",
copyholder = "SID/SCD",
issn = "0038-0938 and 1573-093X",
language = "en",
targetfile = "Minimum variance analysis of interplanetary.pdf",
urlaccessdate = "02 maio 2024"
}