@Article{ChianAbMiBoHyReRu:2018:MuOpIm,
author = "Chian, Abraham Chian Long and Abalde, Jos{\'e} Ricardo and
Miranda, Rodrigo A. and Borotto, Felix A. and Hysell, David L. and
Rempel, Erico Luiz and Ruffolo, David",
affiliation = "{University of Adelaide} and {Instituto Tecnologico de
Aeron{\'a}utica (ITA)} and {Universidade de Bras{\'{\i}}lia
(UnB)} and {Universidad de Concepci{\'o}n} and {Cornell
University} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {Mahidol University}",
title = "Multi-spectral optical imaging of the spatiotemporal dynamics of
ionospheric intermittent turbulence",
journal = "Scientific Reports",
year = "2018",
volume = "8",
pages = "e10568",
month = "July",
abstract = "Equatorial plasma depletions have significant impact on radio wave
propagation in the upper atmosphere, causing rapid fluctuations in
the power of radio signals used in telecommunication and GPS
navigation, thus playing a crucial role in space weather impacts.
Complex structuring and self-organization of equatorial plasma
depletions involving bifurcation, connection, disconnection and
reconnection are the signatures of nonlinear evolution of
interchange instability and secondary instabilities, responsible
for the generation of coherent structures and turbulence in the
ionosphere. The aims of this paper are three-fold: (1) to report
the first optical imaging of reconnection of equatorial plasma
depletions in the South Atlantic Magnetic Anomaly, (2) to
investigate the optical imaging of equatorial ionospheric
intermittent turbulence, and (3) to compare nonlinear
characteristics of optical imaging of equatorial plasma depletions
for two different altitudes at same times. We show that the degree
of spatiotemporal complexity of ionospheric intermittent
turbulence can be quantified by nonlinear studies of optical
images, confirming the duality of amplitude-phase synchronization
in multiscale interactions. By decomposing the analyses into
North-South and East-West directions we show that the degree of
non-Gaussianity, intermittency and multifractality is stronger in
the North-South direction, confirming the anisotropic nature of
the interchange instability. In particular, by using simultaneous
observation of multi-spectral all-sky emissions from two different
heights we show that the degree of non-Gaussianity and
intermittency in the bottomside F-region ionosphere is stronger
than the peak F-region ionosphere. Our results are confirmed by
two sets of observations on the nights of 28 September 2002 and 9
November 2002.",
doi = "10.1038/s41598-018-28780-5",
url = "http://dx.doi.org/10.1038/s41598-018-28780-5",
issn = "2045-2322",
language = "en",
targetfile = "chian_multi.pdf",
urlaccessdate = "27 abr. 2024"
}