@Article{KiharaMKKKMKKTMEDSSBBASDHESK:2021:PeICEv,
author = "Kihara, W. and Munakata, K. and Kato, C. and Kataoka, R. and
Kadokura, A. and Miyake, S. and Kozai, M. and Kuwabara, T. and
Tokumaru, M. and Mendon{\c{c}}a, R. R. S. and Echer, Ezequiel and
Dal Lago, Alisson and Silva, Marlos Rockenbach da and Schuch,
Nelson Jorge and Bageston, Jos{\'e} Valentin and Braga, C. R. and
Al Jassar, H. K. and Sharma, M. M. and Duldig, M. L. and Humble,
J. E. and Evenson, P. and Sabbah, I. and K{\'o}ta, J.",
affiliation = "{Shinshu University} and {Shinshu University} and {Shinshu
University} and {National Institute of Polar Research} and
{National Institute of Polar Research} and {National Institute of
Technology} and {Japan Aerospace Exploration Agency} and {Chiba
University} and {Nagoya University} 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 {George Mason
University} and {Kuwait University} and {Kuwait University} and
{University of Tasmania} and {University of Tasmania} and
{University of Delaware} and {College of Technological Studies}
and {University of Arizona}",
title = "A Peculiar ICME Event in August 2018 Observed With the Global Muon
Detector Network",
journal = "Space Weather",
year = "2021",
volume = "19",
number = "3",
pages = "e2020W002531",
month = "Mar.",
keywords = "coronal mass ejection, corotating interaction region,
cosmic\‐,, ray, geomagnetic storm, magnetic flux rope, solar
minimum.",
abstract = "We demonstrate that global observations of high-energy cosmic rays
contribute to understanding unique characteristics of a
large-scale magnetic flux rope causing a magnetic storm in August
2018. Following a weak interplanetary shock on August 25, 2018, a
magnetic flux rope caused an unexpectedly large geomagnetic storm.
It is likely that this event became geoeffective because the flux
rope was accompanied by a corotating interaction region and
compressed by high-speed solar wind following the flux rope. In
fact, a Forbush decrease was observed in cosmic-ray data inside
the flux rope as expected, and a significant cosmic-ray density
increase exceeding the unmodulated level before the shock was also
observed near the trailing edge of the flux rope. The cosmic-ray
density increase can be interpreted in terms of the adiabatic
heating of cosmic rays near the trailing edge of the flux rope, as
the corotating interaction region prevents free expansion of the
flux rope and results in the compression near the trailing edge. A
northeast-directed spatial gradient in the cosmic-ray density was
also derived during the cosmic-ray density increase, suggesting
that the center of the heating near the trailing edge is located
northeast of Earth. This is one of the best examples demonstrating
that the observation of high-energy cosmic rays provides us with
information that can only be derived from the cosmic ray
measurements to observationally constrain the three-dimensional
macroscopic picture of the interaction between coronal mass
ejections and the ambient solar wind, which is essential for
prediction of large magnetic storms.",
doi = "10.1029/2020SW002531",
url = "http://dx.doi.org/10.1029/2020SW002531",
issn = "1539-4956",
language = "en",
targetfile = "kihara_peculiar.pdf",
urlaccessdate = "09 maio 2024"
}