Harmonic ionospheric oscillation by the 2010 eruption of the Merapi volcano, Indonesia, and the relevance of its amplitude to the mass eruption rate

Cahyadi, Mokhamad Nur; Rahayu, Ririn Wuri; Heki, Kosuke; Nakashima, Yuki

Harmonic ionospheric oscillation by the 2010 eruption of the Merapi volcano, Indonesia, and the relevance of its amplitude to the mass eruption rate

Cahyadi, Mokhamad Nur; Rahayu, Ririn Wuri; Heki, Kosuke et al.

Journal of Volcanology and Geothermal Research, 2020, 405, 107047

Permalink : https://hdl.handle.net/2115/87061

このアイテムのアクセス数:356件（2026-08-15 14:05 集計）

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アクセス権	open access
URI	https://hdl.handle.net/2115/87061
タイトル	Harmonic ionospheric oscillation by the 2010 eruption of the Merapi volcano, Indonesia, and the relevance of its amplitude to the mass eruption rate
著者	Cahyadi, Mokhamad Nur ; Rahayu, Ririn Wuri ; Heki, Kosuke ; Nakashima, Yuki
著者名 Cahyadi, Mokhamad Nur
著者名 Rahayu, Ririn Wuri
e-Rad_Researcher 30280564 著者名 Heki, Kosuke
著者名 Nakashima, Yuki
言語	英語
キーワード	GNSS-TEC
	Ionospheric disturbance
	Plinian eruption
	Indonesia
	Merapi
	Kelud
	Calbuco
発行日	2020-11-01
出版者	Elsevier
収録物名	Journal of Volcanology and Geothermal Research
巻(号)	405
ページ	107047
抄録	Using continuous data from ground-based Global Satellite Navigation System (GNSS) receivers in Java and Sumatra, Indonesia, we studied the response of ionospheric total ionospheric electron content (TEC) to the 2010 Nov.5 eruption of the Merapi volcano in central Java. We then compared the results with the case of the 2014 Feb.13 eruption of the Kelud volcano, eastern Java. The TEC showed a quasi-periodic oscillation of a frequency ~4 mHz with average amplitudes of 0.9 and 1.8% relative to background values lasting for ~20 and ~ 120 min for the Merapi and Kelud eruptions, respectively. By comparing the two cases, together with the 2015 April eruption of the Calbuco volcano, Chile, we found the relative TEC oscillation amplitude may scale with the mass eruption rate. This suggests that the product of such TEC oscillation amplitude and the duration provides a new measure for the total volume of the volcanic deposits.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0377-0273
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jvolgeores.2020.107047