@Article{AlvesSSSJVWSMRDMTKKBWK:2016:OuRaBe,
author = "Alves, Livia Ribeiro and Silva, L{\'{\i}}gia Alves da and Souza,
Vitor Moura Cardoso e Silva and Sibeck, D. G. and Jauer, Paulo
Ricardo and Vieira, Luis Eduardo Antunes and Walsh, B. M. and
Silveira, M. V. D. and Marchezi, Jos{\'e} Paulo and Rockenbach da
Silva, Marlos and Dal Lago, Alisson and Mendes, Odim and
Tsurutani, Bruce T. and Koga, Daiki and Kanekal, S. G. and Baker,
D. N. and Wygant, J. R. and Kletzing, C. A.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {NASA Goddard Space Flight Center}
and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of California} and {NASA Goddard Space Flight Center} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {California Institute of Technology} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {NASA
Goddard Space Flight Center} and {University of Colorado Boulder}
and {University of Minnesota} and {University of Iowa}",
title = "Outer radiation belt dropout dynamics following the arrival of two
interplanetary coronal mass ejections",
journal = "Geophysical Research Letters",
year = "2016",
volume = "43",
number = "3",
pages = "978--987",
month = "Feb.",
keywords = "adiabatic radial transport, magnetopause shadowing, nonadiabatic
radial transport, outer radiation belt dynamics, relativistic
electron loss.",
abstract = "Magnetopause shadowing and wave-particle interactions are
recognized as the two primary mechanisms for losses of electrons
from the outer radiation belt. We investigate these mechanisms,
using satellite observations both in interplanetary space and
within the magnetosphere and particle drift modeling. Two
interplanetary shocks/sheaths impinged upon the magnetopause
causing a relativistic electron flux dropout. The magnetic cloud
(MC) and interplanetary structure sunward of the MC had primarily
northward magnetic field, perhaps leading to a concomitant lack of
substorm activity and a 10 daylong quiescent period. The arrival
of two shocks caused an unusual electron flux dropout.
Test-particle simulations have shown \∼ 2 to 5 MeV energy,
equatorially mirroring electrons with initial values of
L\≥5.5 can be lost to the magnetosheath via magnetopause
shadowing alone. For electron losses at lower L-shells, coherent
chorus wave-driven pitch angle scattering and ULF wave-driven
radial transport have been shown to be viable mechanisms.",
doi = "10.1002/2015GL067066",
url = "http://dx.doi.org/10.1002/2015GL067066",
issn = "0094-8276",
language = "en",
targetfile = "alves_outer.pdf",
urlaccessdate = "27 abr. 2024"
}