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| Titel |
Pre-earthquake ionospheric anomalies registered by continuous GPS TEC measurements |
| VerfasserIn |
J. Y. Liu, Y. J. Chuo, S. J. Shan, Y. B. Tsai, Y. I. Chen, S. A. Pulinets, S. B. Yu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 5 ; Nr. 22, no. 5 (2004-04-08), S.1585-1593 |
| Datensatznummer |
250014860
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| Publikation (Nr.) |
 copernicus.org/angeo-22-1585-2004.pdf |
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| Zusammenfassung |
In this paper we examine pre-earthquake ionospheric anomalies by the total
electron content (TEC) derived from a ground-based receiver of the Global
Positioning System (GPS). A 15-day running median of the TEC and the
associated inter-quartile range (IQR) are utilized as a reference for
identifying abnormal signals during all of the 20M≥6.0 earthquakes in the Taiwan area
from September 1999 to December 2002. Results show that the pre-earthquake
ionospheric anomalies appear during 18:00–22:00LT (LT=UT+8h) within 5 days
prior to 16 of the 20M≥6.0 earthquakes. This success rate
of 80% (=16/20%) suggests that the GPS TEC is useful to register
pre-earthquake ionospheric anomalies appearing before large earthquakes.
Key words. Ionosphere (ionospheric disturbances;
ionosphere-atmosphere interactions) |
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