Investigation of Ionospheric Response to June 2009 Sarychev Peak Volcano Eruption

Shestakov, Nikolay; Orlyakovskiy, Alexander; Perevalova, Natalia; Titkov, Nikolay; Chebrov, Danila; Ohzono, Mako; Takahashi, Hiroaki

Investigation of Ionospheric Response to June 2009 Sarychev Peak Volcano Eruption

Shestakov, Nikolay; Orlyakovskiy, Alexander; Perevalova, Natalia et al.

Remote Sensing, 2021, 13(4), 638

Permalink : https://hdl.handle.net/2115/81040

このアイテムのアクセス数:497件（2026-08-24 07:52 集計）

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論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/81040
タイトル	Investigation of Ionospheric Response to June 2009 Sarychev Peak Volcano Eruption
著者	Shestakov, Nikolay ; Orlyakovskiy, Alexander ; Perevalova, Natalia ; Titkov, Nikolay ; Chebrov, Danila ; Ohzono, Mako ; Takahashi, Hiroaki
著者名 Shestakov, Nikolay
著者名 Orlyakovskiy, Alexander
著者名 Perevalova, Natalia
著者名 Titkov, Nikolay
著者名 Chebrov, Danila
著者名 Ohzono, Mako
e-Rad_Researcher 30301930 著者名 Takahashi, Hiroaki
言語	英語
キーワード	volcanic eruption
	explosion
	GNSS ionosphere sounding
	covolcanic ionospheric disturbances
発行日	2021-02
出版者	MDPI
収録物名	Remote Sensing
巻(号)	13(4)
ページ	638
抄録	Global Navigation Satellite Systems have been extensively used to investigate the ionosphere response to various natural and man-made phenomena for the last three decades. However, ionospheric reaction to volcano eruptions is still insufficiently studied and understood. In this work we analyzed the ionospheric response to the 11-16 June 2009 VEI class 4 Sarychev Peak volcano eruption by using surrounding Russian and Japanese GPS networks. Prominent covolcanictotal electron content (TEC)ionospheric disturbances (CVIDs) with amplitudes and periods ranged between 0.03-0.15 TECU and 2.5-4.5 min were discovered for the three eruptive events occurred at 18:51 UT, 14 June; at 01:15 and 09:18 UT, 15 June 2009. The estimates of apparent CVIDs velocities vary within 700-1000 m/s in the far-field zone (300-900 km to the southwest from the volcano) and 1300-1800 m/s in close proximity toSarychev Peak. The characteristics of the observed TEC variations allow us to attribute them to acoustic mode. The south-southwestward direction is preferred for CVIDs propagation. We concluded that the ionospheric response to a volcano eruption is mainly determined by a ratio between explosion strength and background ionization level. Some evidence of secondary (F2-layer) CVIDs' source eccentric location were obtained.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/rs13040638