Journal
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Volume 124, Issue 11, Pages 9239-9252Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2019JA026640
Keywords
ionospheric disturbances; total electron content
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Funding
- CentralWeather Bureau (CWB) of Taiwan [MOTC-CWB-107-E-01, MOTC-CWB-108-E-01]
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On 5 February 2016 (UTC), an earthquake with moment magnitude 6.4 occurred in southern Taiwan, known as the 2016 (Southern) Taiwan earthquake and 2016 Meinong earthquake. In this study, evidences of seismic earthquake precursors for this earthquake event are investigated. Results show that ionospheric anomalies in total electron content (TEC) can be observed before the earthquake. These anomalies were obtained by processing TEC data, where such TEC data are calculated from phase delays of signals observed at densely arranged ground-based stations in Taiwan for Global Navigation Satellite Systems. This shows that such anomalies were detected within 1 hr before the event.
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