A statistical investigation of preearthquake ionospheric anomaly

研究成果: 雜誌貢獻期刊論文同行評審

297 引文 斯高帕斯(Scopus)

摘要

Empirical evidence of the preearthquake ionospheric anomalies (PEIAs) is reported by statistically investigating the relationship between variations of the plasma frequency at the ionospheric F2 peak foF2 and 184 earthquakes with magnitude M ≥ 5.0 during 1994-1999 in the Taiwan area. The PEIA, defined as the abnormal decrease more than about 25% in the ionospheric foF2 during the afternoon period, 1200-1800 LT, significantly occurs within 5 days before the earthquakes. Moreover, the odds of earthquakes with PEIA increase with the earthquake magnitude but decrease with the distance from the epicenter to the ionosonde station. These results indicate that the PEIA is energy related.

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文章編號A05304
期刊Journal of Geophysical Research: Space Physics
111
發行號5
DOIs
出版狀態已出版 - 1 5月 2006

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