Network Theory to Reveal Ionospheric Anomalies over North America and Australia

There are significant challenges to model the ionosphere due to different anomalies, especially under the increasing requirements for precision level. We used network theory to construct an ionospheric network analysis based on the data of global ionospheric maps for the period from 1998 to 2015. Th...

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Bibliographic Details
Published in:Atmosphere 2022-08, Vol.13 (8), p.1333
Main Authors: Zhivetiev, Ilya V., Yasyukevich, Yury V.
Format: Article
Language:English
Subjects:
Anomalies
Environmental aspects
global ionospheric maps
Ionosphere
Ionospheric models
Ionospheric research
Magnetic anomalies
Magnetic field
Magnetic fields
Network analysis
network theory
Radio communications
Satellites
Total Electron Content
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Summary:There are significant challenges to model the ionosphere due to different anomalies, especially under the increasing requirements for precision level. We used network theory to construct an ionospheric network analysis based on the data of global ionospheric maps for the period from 1998 to 2015. The network approach revealed different domains in the ionosphere. Besides the well-known equatorial anomaly, we revealed two more essential areas with “anomalous” behavior in the total electron content (TEC). Both anomalies are located at mid-latitudes: the first over most of North America, and the second one over the southeast part of Australia and the adjacent part of the Indian Ocean. The revealed areas partly coincide with the winter anomaly regions. Our results demonstrate that complex ionosphere/magnetic field/neutral atmosphere interaction can result in atypical ionosphere dynamics in huge areas.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos13081333