@InProceedings{AlvesSJPWASVLECDSDMMSS:2018:GlMHSi,
author = "Alves, Maria Virginia and Souza, Vitor Moura Cardoso e Silva and
Jauer, Paulo Ricardo and P{\'a}dua, Marcelo Banik de and Wang,
Chi and Alves, Livia Ribeiro and Silva, Ligia Alves da and Vieira,
Lu{\'{\i}}s Eduardo Antunes and Lopez, Ramon E. and Echer,
Ezequiel and Costa, Joaquim Eduardo Rezende and Denardin, Clezio
Marcos and Silva, Marlos Rockenbach da and Deggeroni, Vinicius and
Medeiros, Cl{\'a}udia and Marchezi, Jos{\'e} Paulo and Silva,
Graziela Belmira Dias da and Schmitz, Roberta Gon{\c{c}}alves",
affiliation = "{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 CSSAR and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{University of Texas at Arlington} 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
{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 {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "A global MHD simulation of ULF waves activity in the inner
magnetosphere resulting from CIR followed by ALFVENIC
fluctuations",
year = "2018",
organization = "AGU Fall Meeting",
abstract = "The interaction between the disturbed solar wind and the
geomagnetic field gives rise to different physical processes that
can significantly affect technological systems as well as human
life. Here we investigate the role of a complex solar structure, a
corotating interaction region (CIR) followed by magnetic field
Alfv{\'e}nic fluctuations in the generation of disturbances in
the inner magnetosphere. These disturbances are observed in terms
of the power spectral density (PSD) of the ultra low frequency
waves (ULF) in the nightside, equatorial region. Several studies
show the correlation between CIRs followed by Alfv{\'e}nic
fluctuations and the generation of ULF waves in the internal
magnetosphere. However, until now it is not straightforward to
decisively say which solar wind parameters or which combinations
thereof are most effective in causing disturbances in the inner
magnetosphere, or how each part of the complex interplanetary
structure influences the most the temporal evolution of the
magnetosphere. Using global MHD simulations we try to address some
of these questions. Firstly, we use the magnetic field and plasma
parameters of a real, complex CIR+Alfv{\'e}nic fluctuations event
as input to the SWMF/BATS-R-US code and then calculate from the
model outputs the PSD of ULF waves in the aforementioned region.
Then, we separate the complex event into its constituent parts by
building synthetic magnetic field and plasma profiles based on the
physical parameters that characterize each of these parts. The MHD
code is then fed with each new synthetic profile to provide ULF
PSDs that are compared with those from the simulation with real
solar wind inputs. This numerical experiment will help us to
understand which solar wind parameters contribute the most for the
ULF waves activity in the nightside magnetosphere. We expect to
provide important information for future forecasting studies of
ULF wave activity in the Earths magnetosphere whenever the
geospace is under the influence of recurrent events as the one
analyzed here.",
conference-location = "Washington, D. C.",
conference-year = "10-14 dec.",
language = "en",
targetfile = "Poster_AGU_final.pdf",
urlaccessdate = "28 abr. 2024"
}