Browse > Article
http://dx.doi.org/10.12673/jant.2018.22.2.49

Analysis on Normal Ionospheric Trend and Detection of Ionospheric Disturbance by Earthquake  

Kang, Seonho (Mechanical and Aerospace Engineering, Seoul National University, Institute of Advanced Machines and Design)
Song, Junesol (Mechanical and Aerospace Engineering, Seoul National University, Institute of Advanced Machines and Design)
Kim, O-jong (Mechanical and Aerospace Engineering, Seoul National University, Institute of Advanced Machines and Design)
Kee, Changdon (Mechanical and Aerospace Engineering, Seoul National University, Institute of Advanced Machines and Design)
Publication Information
Journal of Advanced Navigation Technology / v.22, no.2, 2018 , pp. 49-56 More about this Journal
Abstract
As the energy generated by earthquake, tsunami, etc. propagates through the air and disturbs the electron density in the ionosphere, the perturbation can be detected by analyzing the ionospheric delay in satellite signal. The electron density in the ionosphere is affected by various factors such as solar activity, latitude, season, and local time. To distinguish from the anomaly, therefore, it is required to inspect the normal trend of the ionosphere. Also, as the perturbation magnitude diminishes by distance it is necessary to develop an appropriate algorithm to detect long-distance disturbances. In this paper, normal condition ionosphere trend is analyzed via IONEX data. We selected monitoring value that has no tendency and developed an algorithm to effectively detect the long-distance ionospheric disturbances by using the lasting characteristics of the disturbances. In the end, we concluded the $2^{nd}$ derivative of ionospheric delay would be proper monitoring value, and the false alarm with the developed algorithm turned out to be 1.4e-6 level. It was applied to 2011 Tohoku earthquake case and the ionospheric disturbance was successfully detected.
Keywords
Earthquake; Tsunami; Ionospheric disturbance; Total electron content; GNSS;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 S. Kang, et al., "Analysis on Ionospheric Trend by Latitude/Season/Solar activity and Ionospheric Disturbances Detection Method," in Proceeding of the 2017 IPNT Conference, Jeju: Korea, pp.426-429, Nov. 2017.
2 B. Park, A study on reducing temporal and spatial decorrelation effect in GNSS augmentation system : consideration of the correction message standardization, Ph. D. dissertation, Seoul National University, Seoul, Korea, 2008.
3 J. E. Titheridge, “Changes in atmospheric composition inferred from ionospheric production rates,” Journal of Atmospheric and Terrestrial Physics, Vol. 36, No. 7, pp. 1249-1257, 1974.   DOI
4 J. Park, et al., “GPS discrimination of traveling Ionospheric disturbances from underground nuclear explosions and earthquakes,” Navigation, Vol. 61, No. 2, pp. 125-134, 2013.
5 D. Han, et al., “Modeling of GPS measurement noise for estimating smoothed pseudorange and ionospheric delay,” Journal of Advanced Navigation Technology, Vol. 16, No. 4, pp. 602-610, 2012.   DOI
6 C. O. Hines, “Internal atmospheric gravity waves at ionospheric heights,” Canadian Journal of Physics, Vol. 38, No. 11, pp. 1441-1481, 1960.   DOI
7 W. R. Peltier, and C. O. Hines. "On the possible detection of tsunamis by a monitoring of the ionosphere," Journal of Geophysical Research, Vol. 81, No. 12, pp. 1995-2000, 1976.   DOI
8 N. P. Perevalova, V. A. Sankov, E. I. Astafyeva, and А. S. Zhupityaeva, “Threshold magnitude for ionospheric TEC response to earthquakes,” Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 108, No. 9, pp. 77-90, 2014.   DOI
9 Y.M.Yang, et al. "Tohoku‐Oki earthquake caused major ionospheric disturbances at 450 km altitude over Alaska," Radio Science, Vol. 49, No. 12, pp. 1206-1213, 2014.   DOI