GPS based detection of pre-seismic ionospheric abnormality

Yang Meng; Zemin Wang; Dongchen E; Jingbin Liu

doi:10.1117/12.775289

10 November 2007 GPS based detection of pre-seismic ionospheric abnormality

Yang Meng, Zemin Wang, Dongchen E, Jingbin Liu

Proceedings Volume 6795, Second International Conference on Space Information Technology; 67956J (2007) https://doi.org/10.1117/12.775289
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

Ionospheric abnormality before the 26 December 2004 M9.3 Sumatra earthquake is detected by the total electron content (TEC) of ground-based receivers of the global positioning system (GPS) in the Indian Ocean area. Higher spatiotemporal grids of VTEC than earlier research are computed. To identify the abnormal ionospheric-seismic signals before the earthquake, a method of statistical analysis is utilized, and the temporal solar activity and geomagnetic environment is also considered in this paper. Results indicate that VTECs mostly decreased 4 days before earthquake happening, and quickly come back after the tragedy. We also find that areas of ionospheric-seismic anomalies is in ±15° latitude deviate from epicenter, and the anomalies are more obvious in the sea than the earth, so we can deduce that correlations of ionosphere with seabed and earth are different to some extent.

Citation Download Citation

Yang Meng, Zemin Wang, Dongchen E, and Jingbin Liu "GPS based detection of pre-seismic ionospheric abnormality", Proc. SPIE 6795, Second International Conference on Space Information Technology, 67956J (10 November 2007); https://doi.org/10.1117/12.775289

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