Articles | Volume 23, issue 2
https://doi.org/10.5194/nhess-23-675-2023
https://doi.org/10.5194/nhess-23-675-2023
Research article
 | 
14 Feb 2023
Research article |  | 14 Feb 2023

The characteristics of the 2022 Tonga volcanic tsunami in the Pacific Ocean

Gui Hu, Linlin Li, Zhiyuan Ren, and Kan Zhang

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Cited articles

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Amores, A., Monserrat, S., Marcos, M., Argüeso, D., Villalonga, J., Jordà, G., and Gomis, D.: Numerical simulation of atmospheric Lamb waves generated by the 2022 Hunga-Tonga volcanic eruption, Geophys. Res. Lett., 49, e2022GL098240, https://doi.org/10.1029/2022GL098240, 2022. 
Aranguiz, R., Catalán, P. A., Cecioni, C., Bellotti, G., Henriquez, P., and González, J.: Tsunami Resonance and Spatial Pattern of Natural Oscillation Modes With Multiple Resonators, J. Geophys. Res.-Oceans, 124, 7797–7816, https://doi.org/10.1029/2019JC015206, 2019. 
Baba, T., Takahashi, N., Kaneda, Y., Ando, K., Matsuoka, D., and Kato, T.: Parallel Implementation of Dispersive Tsunami Wave Modeling with a Nesting Algorithm for the 2011 Tohoku Tsunami, Pure Appl. Geophys., 172, 3455–3472, https://doi.org/10.1007/s00024-015-1049-2, 2015. 
Bevis, M., Taylor, F. W., Schutz, B. E., Recy, J., Isacks, B. L., Helu, S., Singh, R., Kendrick, E., Stowell, J., Taylor, B., and Calmantli, S.: Geodetic observations of very rapid convergence and back-arc extension at the tonga arc, Nature, 374, 249–251, https://doi.org/10.1038/374249a0, 1995. 
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Short summary
We explore the tsunamigenic mechanisms and the hydrodynamic characteristics of the 2022 Hunga Tonga–Hunga Ha'apai volcanic tsunami event. Through extensive analysis of tsunami waveforms, we identify four distinct tsunami components from different physical mechanisms. The long-lasting oscillation of the tsunami event in the Pacific Ocean was mainly associated with the interplay of the ocean waves left by atmospheric waves with local bathymetry.
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