Ionospheric Precursor before a 547 km deep Indonesia Nebe Earthquake on 27 February 2015, Mw=7.0 using Two-Dimensional Principal Component Analysis (2DPCA)
Journal Title: ASIAN JOURNAL OF NATURAL & APPLIED SCIENCES - Year 2015, Vol 4, Issue 4
Abstract
In this study, the ionospheric Total Electron Content (TEC) data of 5 days before Indonesia Nebe earthquake occurred at 13:45:05 (UT) on 27 February 2015 ( =7.0) with the depth of 547km and the epicentre of 7.277°S, 122.534°E were examined to detect TEC precursor by using Two-Dimensional Principal Component Analysis (2DPCA) because such TEC precursor could not be found by observation analysis. Results have shown that a TEC precursor was highly localized and increased in intensity during the time period from 05:55 to 06:00 (UT) on 26 February 2015. The duration time of TEC anomaly was at least 5 minutes. Possible reason of the TEC precursor over the epicenter before this earthquake should be radon gas release.
Authors and Affiliations
Jyh-Woei, Lin
Keywords
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- EP ID EP143680
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