Source mechanism and early warning of volcanic tsunamis

Tony Song

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[E] 口頭発表

セッション記号 S (固体地球科学) » S-CG 固体地球科学複合領域・一般

[S-CG50] Earthquakes, Tsunamis, Seismotectonics, and Hazard Potential of the Ryukyu Trench and Okinawa Trough

2025年5月28日(水) 13:45 〜 15:15 106 (幕張メッセ国際会議場)

コンビーナ:佐竹健治(国立中央大学（台湾）)、中村衛(琉球大学理学部)、PINGYU CHANG(National Central University, Taiwan)、Shyu J. Bruce H.(National Taiwan University)、座長:佐竹健治(国立中央大学（台湾）)、J. Bruce H. Shyu(National Taiwan University)、中村衛(琉球大学理学部)、CHANG PINGYU(National Central University, Taiwan)

14:45 〜 15:00

[SCG50-05] Source mechanism and early warning of volcanic tsunamis

*Tony Song¹ (1.NASA/JPL)

キーワード：Volcanic tsunami

Volcanic tsunamis pose serious threats to nearby coastal communities. Our study of the 2022 Tonga volcanic event revealed that the erupted air-pressure wave was a precursor to the tsunami. Contrary to previous theories, our findings indicate that the eruption process drives both the air-pressure wave and tsunami dynamics through a coupled atmosphere-ocean source mechanism. This insight offers a new approach for incorporating air-pressure sensors into early warning systems. Related publication: Nature’s Communications Earth & Environment (Song et al., 2004) https://doi.org/10.1038/s43247-024-01694-z.