Atmospheric modes excited by the 2021 August eruption of the Fukutoku-Okanoba volcano, Izu-Bonin Arc, observed as harmonic TEC oscillations by QZSS

被引：22

作者：

Heki, Kosuke ^{[1
]}

Fujimoto, Tatsuya ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Nat Hist Sci, Sapporo, Hokkaido, Japan

来源：

EARTH PLANETS AND SPACE | 2022年 / 74卷 / 01期

关键词：

QZSS; GNSS; Ionospheric disturbance; Total electron content; Fukutoku-Okanoba; Plinian eruption; Atmospheric mode; WAVES;

D O I：

10.1186/s40623-022-01587-5

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Continuous Plinian eruptions of volcanoes often excite atmospheric resonant oscillations with several distinct periods of a few minutes. We detected such harmonic oscillations by the 2021 August eruption of the Fukutoku-Okanoba volcano, a submarine volcano in the Izu-Bonin arc, in ionospheric total electron content (TEC) observed from Global Navigation Satellite System (GNSS) stations deployed on three nearby islands, Chichijima, Hahajima, and Iwojima. Continuous records with the geostationary satellite of Quasi-Zenith Satellite System (QZSS) presented four frequency peaks of such atmospheric modes. The harmonic TEC oscillations commenced at similar to 5:16 UT with a large amplitude but decayed in a few hours.

引用

页数：9

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