@Article{SilvaSVARASDMCMAWALL:2023:WhCaAu,
author = "Silva, Ligia Alves da and Shi, J. and Vieira, Luis Eduardo Antunes
and Agapitov, O. V. and Resende, Laysa Cristina Ara{\'u}jo and
Alves, Livia Ribeiro and Sibeck, D. and Deggeroni,
Vin{\'{\i}}cius and Marchezi, Jos{\'e} Paulo and Chen, Sony Su
and Moro, Juliano and Arras, Christina and Wang, C. and Andrioli,
Vania F{\'a}tima and Li, H. and Liu, Z.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Chinese
Academy of Sciences (CAS)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and University of California, Berkeley 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 {University of New Hampshire} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {German Research Centre for
Geosciences} and {Chinese Academy of Sciences (CAS)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Chinese
Academy of Sciences (CAS)} and {Chinese Academy of Sciences
(CAS)}",
title = "Why can the auroral-type sporadic E layer be detected over the
South America Magnetic Anomaly (SAMA) region? An investigation of
a case study under the influence of the high-speed solar wind
stream",
journal = "Frontiers in Astronomy and Space Sciences",
year = "2023",
volume = "10",
pages = "1197430",
keywords = "inner radiation belt, South America Magnetic Anomaly, auroral-type
sporadic E-layers,, particle precipitation, hiss waves, pitch
angle scattering.",
abstract = "The low-electron flux variability (increase/decrease) in the
Earths radiation belts could cause low-energy Electron
Precipitation (EP) to the atmosphere over auroral and South
American Magnetic Anomaly (SAMA) regions. This EP into the
atmosphere can cause an extra upper atmospheres ionization,
forming the auroral-type sporadic E layers (Esa) over these
regions. The dynamic mechanisms responsible for developing this
Esa layer over the auroral region have been established in the
literature since the 1960s. In contrast, there are several open
questions over the SAMA region, principally due to the absence (or
contamination) of the inner radiation belt and EP parameter
measurements over this region. Generally, the Esa layer is
detected under the influence of geomagnetic storms during the
recovery phase, associated with solar wind structures, in which
the time duration over the auroral region is considerably greater
than the time duration over the SAMA region. The inner radiation
belts dynamic is investigated during a High-speed Solar wind
Stream (September 24-25, 2017), and the hiss wave-particle
interactions are the main dynamic mechanism able to trigger the
Esa layers generation outside the auroral oval. This result is
compared with the dynamic mechanisms that can cause particle
precipitation in the auroral region, showing that each region
presents different physical mechanisms. Additionally, the
difference between the time duration of the hiss wave activities
and the Esa layers is discussed, highlighting other ingredients
mandatory to generate the Esa layer in the SAMA region.",
doi = "10.3389/fspas.2023.1197430",
url = "http://dx.doi.org/10.3389/fspas.2023.1197430",
issn = "2296-987X",
label = "lattes: 0978954754409584 10 SilvaSVARASDMCMAWALL:2023:WhCaAu",
language = "pt",
targetfile = "fspas-10-1197430.pdf",
urlaccessdate = "21 maio 2024"
}