@Article{KozyraLCZEEFFFGHHLMMPRRSSSTTV:2014:GeCo,
author = "Kozyra, J. U. and Liemohn, M. W. and Cattell, C. and De Zeeuw, D.
and Escoubet, C. P. and Evans, D. S. and Fang, X. and Fok, M. -C.
and Frey, H. U. and Gonzalez, Walter Dem{\'e}trio and Hairston,
M. and Heelis, R. and Lu, G. and Manchester, W. B. and Mende, S.
and Paxton, L. J. and Rastaetter, L. and Ridley, A. and Sandanger,
M. and Soraas, F. and Sotirelis, T. and Thomsen, M. W. and
Tsurutani, B. T. and Verkhoglyadova, O.",
affiliation = "{University of Michigan} and {University of Michigan} and School
of Physics and Astronomy, University of Minnesota and {University
of Michigan} and ESA and {University of Colorado Boulder} and
{NASA Goddard Space Flight Center} and {University of California}
and {University of Texas at Dallas} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {High Altitude Observatory} and
{High Altitude Observatory} and {Johns Hopkins University} and
{University of Michigan} and {University of California} and
{Community Coordinated Modeling Center (GSFC)} and Birkeland
Centre for Space Science, Department of Physics and Technology,
University of Bergen, Bergen, Norway and {University of Michigan}
and {Los Alamos National Laboratory} and {Los Alamos National
Laboratory} and {Community Coordinated Modeling Center (GSFC)} and
{Jet Propulsion Laboratory} and {Jet Propulsion Laboratory} and
{Jet Propulsion Laboratory}",
title = "Solar filament impact on 21 January 2005: Geospace consequences",
journal = "Journal of Geophysical Research: Space Physics",
year = "2014",
volume = "119",
number = "7",
pages = "5401--5448",
abstract = "On 21 January 2005, a moderate magnetic storm produced a number of
anomalous features, some seen more typically during superstorms.
The aim of this study is to establish the differences in the space
environment from what we expect (and normally observe) for a storm
of this intensity, which make it behave in some ways like a
superstorm. The storm was driven by one of the fastest
interplanetary coronal mass ejections in solar cycle 23,
containing a piece of the dense erupting solar filament material.
The momentum of the massive solar filament caused it to push its
way through the flux rope as the interplanetary coronal mass
ejection decelerated moving toward 1 AU creating the appearance of
an eroded flux rope (see companion paper by Manchester et al.
(2014)) and, in this case, limiting the intensity of the resulting
geomagnetic storm. On impact, the solar filament further disrupted
the partial ring current shielding in existence at the time,
creating a brief superfountain in the equatorial ionosphere - an
unusual occurrence for a moderate storm. Within 1 h after impact,
a cold dense plasma sheet (CDPS) formed out of the filament
material. As the interplanetary magnetic field (IMF) rotated from
obliquely to more purely northward, the magnetotail transformed
from an open to a closed configuration and the CDPS evolved from
warmer to cooler temperatures. Plasma sheet densities reached tens
per cubic centimeter along the flanks - high enough to inflate the
magnetotail in the simulation under northward IMF conditions
despite the cool temperatures. Observational evidence for this
stretching was provided by a corresponding expansion and
intensification of both the auroral oval and ring current
precipitation zones linked to magnetotail stretching by field line
curvature scattering. Strong Joule heating in the cusps, a
by-product of the CDPS formation process, contributed to an
equatorward neutral wind surge that reached low latitudes within
1-2 h and intensified the equatorial ionization anomaly.
Understanding the geospace consequences of extremes in density and
pressure is important because some of the largest and most
damaging space weather events ever observed contained similar
intervals of dense solar material.",
doi = "10.1002/2013JA019748",
url = "http://dx.doi.org/10.1002/2013JA019748",
issn = "2169-9402",
label = "scopus 2014-11 KozyraLCZEEFFFGHHLMMPRRSSSTTV:2014:GeCo",
language = "en",
targetfile = "Kozyra_solar.pdf",
urlaccessdate = "27 abr. 2024"
}