Multi-spectral optical imaging of the spatiotemporal dynamics of ionospheric intermittent turbulence

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dc.contributor.authorChian, A.
dc.contributor.authorAbalde, J.
dc.contributor.authorMiranda, R.
dc.contributor.authorBorotto, F.
dc.contributor.authorHysell, D.
dc.contributor.authorRempel, E.
dc.contributor.authorRuffolo, D.
dc.date.issued2018
dc.description.abstractEquatorial 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.
dc.description.statementofresponsibilityAbraham C.-L. Chian, José R. Abalde, Rodrigo A. Miranda, Felix A. Borotto, David L. Hysell, Erico L. Rempel, David Ruffolo
dc.identifier.citationScientific Reports, 2018; 8(1):10568-1-10568-15
dc.identifier.doi10.1038/s41598-018-28780-5
dc.identifier.issn2045-2322
dc.identifier.issn2045-2322
dc.identifier.orcidChian, A. [0000-0002-8932-0793]
dc.identifier.urihttp://hdl.handle.net/2440/119069
dc.language.isoen
dc.publisherSpringer Nature
dc.rights© The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.source.urihttps://doi.org/10.1038/s41598-018-28780-5
dc.titleMulti-spectral optical imaging of the spatiotemporal dynamics of ionospheric intermittent turbulence
dc.typeJournal article
pubs.publication-statusPublished

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