An ash and gas plume rises from Hunga volcano, Tonga, on 14 January 2022. Global geophysical observations reveal that the climactic eruption that followed on 15 January produced a broad range of atmospheric waves, with pressure wave amplitudes comparable with those from the 1883 Krakatau eruption. While propagating over the world’s oceans, the remarkable atmospheric waves generated complex fast-traveling tsunamis. See pages 30, 91, and 95.
Photo: Taaniela Kula, Tonga Geological Services
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