On Tsunami Waves Induced by Atmospheric Pressure Shock Waves After the 2022 Hunga Tonga‐Hunga Ha'apai Volcano Eruption

Employing a linear shallow water equation (LSWE) model in the spherical coordinates, this paper investigates tsunami waves generated by atmospheric pressure shock due to explosion of submarine volcano Hunga Tonga–Hunga Ha'apai on 15 January 2022. Using selected 59 records Pacific Ocean, an empirical is first constructed. Applying and realistic bathymetric data LSWE model, generation propagation are simulated Ocean. The numerical results show clearly co-existence leading locked waves, propagating with speed (∼1,100 km/hr), trailing free long gravity ocean wave celerity (∼750 km/hr). During event, tsunamis were reported 41 Deep-ocean Assessment Reporting Tsunamis (DART) buoys which require corrections because occurrence waves. numerically arrival time amplitudes crest trough compare reasonably well corrected DART measurements. comparisons for less satisfactory, since could also have been other mechanisms, not considered present scattering over changing bathymetry. In regard, that deep Tonga trench (∼10 km) amplifies Southeast part Ocean via Proudman resonance condition.