Resumo

LIN, Jyh-Woei. Ionospheric response to Huge Gas Explosion in Kaohsiung City, Taiwan, on July 31, 2014. Geofís. Intl [online]. 2018, vol.57, n.1, pp.59-65. ISSN 2954-436X.

In this paper the two-dimensional Principal Component Analysis (2DPCA) was used to determine the total electron content (TEC) anomaly using the principal eigenvalue of 2DPCA as a mathematical indicator in the ionos-pheric response to the huge gas explosion in Kaohsiung city (22°36′39″N 120°19′8″E), Taiwan at 15: 59 (UT) on July 31, 2014. 2DPCA has been shown to be sensitive to detect weak TEC anomalies. 2DPCA gives a careful data handling description. Results have shown that a TEC anomaly over Taiwan was observed from 16:00 to 16:05 (UT). The acoustic shock waves have caused a TEC anomaly detectable without considering the atmosphere situation and traveling of acoustic shock waves during this explosion. The duration time of the TEC anomaly was at least 5 minutes.

Palavras-chave : Two-dimensional principal compo-nent analysis (2DPCA); total electron content (TEC); huge gas explosion; Kaohsiung City; acoustic shock waves.

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