pre-earthquake ionospheric anomalies registered by continuous gps tec measurements
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ID: 252588
2004
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Abstract
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)
Key words. Ionosphere (ionospheric disturbances; ionosphere-atmosphere interactions)
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| Reference Key |
liu2004annalespre-earthquake
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|---|---|
| Authors | ;J. Y. Liu;J. Y. Liu;Y. J. Chuo;S. J. Shan;Y. B. Tsai;Y. I. Chen;S. A. Pulinets;S. B. Yu |
| Journal | journal of food measurement and characterization |
| Year | 2004 |
| DOI |
10.5194/angeo-22-1585-2004
|
| URL | |
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