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Proceedings Paper

GPS based detection of pre-seismic ionospheric abnormality
Author(s): Yang Meng; Zemin Wang; Dongchen E; Jingbin Liu
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Paper 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.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67956J (10 November 2007); doi: 10.1117/12.775289
Show Author Affiliations
Yang Meng, Wuhan Univ. (China)
Zemin Wang, Wuhan Univ. (China)
Dongchen E, Wuhan Univ. (China)
Jingbin Liu, Wuhan Univ. (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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