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

Scientific Reports
Abraham C-L ChianDavid Ruffolo

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 ...Continue Reading

References

Jan 10, 2003·Nature·Benjamin W ZeffDaniel P Lathrop
Aug 9, 2003·Physical Review Letters·Kaifen He, Abraham C-L Chian
Feb 12, 2008·Applied Optics·F J GarciaM C Kelley
Sep 28, 2010·Physical Review Letters·Abraham C-L ChianMichio Yamada

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